Vault 18, Hybrid Heaven

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Vault 18, Hybrid Heaven

The sound of a sliding door is heard as suddenly a short humanoid comes out of it, hitting the floor with a loud splat due to the wetness of their bodies, two creatures that could resemble geckos but also having the proportions of a human, or as human as it was possible, "⍙⊑⏃⏁ ⏁⊑⟒ ⎎⎍☊☍, ⏁⊑⏃⏁ ⊑⎍⍀⏁⌇!"

"⍙⊑⟒⍀⟒ ⏃⍀⟒ ⍙⟒? ⍙⊑⏃⏁'⌇ ⊑⏃⌿⌿⟒⋏⟟⋏☌? ⍙⊑⟒⍀⟒ ⟟⌇ ⋔⍜⏁⊑⟒⍀? ⟟ ⏃⋔ ⊑⎍⋏☌⍀⊬." They were speaking in tongues, rather a non-known language, but they were trying their best to speak about themselves. A sudden small syringe appeared from the pods; they were pushed out, injecting each of them with some sort of liquid.

"OUCH!"

"Damn it..." Both gecko sisters clicked their tongues as they felt more light around the neck and mouth. "Oh wait, that actually feels—" The gecko sister collapsed out of nowhere, hitting the ground, but this time instead of a splat, there was a loud thump as she passed out. Her sister followed right afterwards as everything went black; first day on a new world, and they were already getting started in the most perfect way it seems.

After a few unknown amounts of time, both sisters suddenly woke up, hissing as they were blinded by flashing lights, not expecting the sudden flashbang. As a reel started to play, it was one of those old films being played in a projector. The sister stood up, looking around and finding her "hatchmate" next to her, going for her and hugging her, still pretty much naked and wet. "Wait, where are we?!"

The film started to play as they heard some loud music, covering their ears as they were not expecting that; it was trumpets, drums, and a soothing voice welcoming them.

"WELCOME, WELCOME TO VAULT 18." All letters in caps and the last ones in bold.

"Vault 18?" Both sisters said in perfect English, looking at each other confused, as to why they knew the language the machine was speaking as well; as a matter of fact, why did they feel so smart...?

"That's right, Vault 18. You critters are probably wondering what Vault 18 is. Well, let me give you a small brief history lesson. Before we go forward, we must go back to the era of AMERICA, the best country in the world. We were so great we were even a continent." The film kept playing.

"What's a continent?" Her sister shrugged as well.

"It was populated by the best type of people in the world, Americans, and the best of the best, VAULT-TEC. That's where you come from, you weak critters. When the new world arrives, you are to serve mankind as best as possible, all of you together." The sisters looked back... There was no one. They pointed at themselves as the film continued. "You are hereby vault dwellers and Americans from now on. Vault 18 has been made with the purpose of harvesting human DNA and mixing it with other life forms; if you are right now in this room with a completely functional, English-speaking brain, then congratulations, you are the pride and most precious thing in this whole vault [INSERT YOUR NAME HERE]." Clapping sounds were heard. "You will be made to serve humans once the apocalypse is over and reclamation day is upon us."

"Uuuuh, movie machine thing, me and my sister-" The film, of course, did not stop playing even as they wanted to speak.

"Now once you are done, head yourself to the nurse room, where you will be attended to by our fineeee machinery, then head to take the G.O.A.T. test so we can see how smart you ended up being alongside your friends, and once that's done, all your positions in the vault shall be given."

"Uuuuuh hello?"

"And that's all. Please follow one of the Mr. Handys to your respective rooms."

"What is a hand?" A robot would suddenly open the door as it came inside the room flying, hovering all over the place.

"Good day, Madam. Ready to be helped? I heard you critters might have small brains, but do not worry; I have handled infants before. I am sure I can handle some slimy naked monster. Without further ado, let's get to it. Come along, come along; there is no time to waste." The sisters looked at each other confused, but for the first time they had something to speak to.

"W-wait... Uuuuh." The bot turned around. "Where are the other sisters and brothers?" She grinned, trying to not show off much of her teeth; she felt awkward for some reason.

"What others?"

"Th-there are two of us. But I saw more pods before sleepy time."

"... Yes."

"And where is the rest?" Her other sister tried to get some information about it.

"There is no rest, pods are empty, everyone died, some in more horrific ways possible than others; what a mess."

"...S-so how many there are of us?"

"Currently there are two of you in the room."

"No, no, Sister meant total."

"Ah, apologies. Currently in the vault there are a stunning, amazing total of 2 critters."

"That's the same number."

"So I've been told; let's head to your rooms." The bot turned around, and both she and her sister realized they were the only two hybrids that survived the experiment from Vault 18.

VAULT 18

The experiment was simple: mix human DNA with monster and critter DNA. Sadly, everyone but 2 specimens died, being the gecko sisters, who were the only successful experiment that came out of it. The idea was for the vault to have a total of 200 'specimens,' and there were a total of 600 attempts, so in the case of 1/3 of failed experiments, there would be critters still remaining to handle the vault, but the losses ended up being 598/600, meaning only the sisters remained, making them the total population of the vault. Thankfully, there were still plenty of robots (for now) ready to help them through.

They first started with goat tests, exams, proper education, feeding, and most importantly, clothing since the first week they spent it walking around the empty vault absolutely naked, and even if no one was to see them, they were quite the eye candy to behold, the perfect definition of a stacked short stack. Their small stature had to be at least one meter, if not one meter and a bit more; their breasts were as big as their heads, comparable to those of small watermelons, and their asses equally as huge. Walking naked would make their fat cheeks clap just by wobbling around. They were quite sexy and alluring even if their faces remained those of gecko creatures, but their bodies weren't just because they were mixed with some hottie human DNA... they were... But not because of any reason; they had another purpose.

Slaves or not, they were also made to be able to reproduce with normal humans to do one of two things: keep making more slaves OR create a superhuman mutant race to take over the world; after all, Vault-Tec must be one step ahead of China. Screw China!

2 years after a full course of how to speak English, a short but excruciating course of how to fix... Everything in the vault and some proper education on other fields such as medicine, literature, gunmanship, and marksmanship; the two sisters had become fully vault dwellers, a bit naive to the outside world, and even learned about their gecko nature, which was pretty good. Not to mention, they also had learning beds, machines that filter through subtle hypnosis information in their brain.

They were as smart as a human could be, minus a few aspects, being the social ones; they still enjoyed eating some bugs and had an aggressive nature towards things they didn't understand, animals at their core. But after these years the final 'learning session' had come, the most important part and one of the main purposes they were made for. Breeding lessons.

"Secshual education?" The blue gecko, one of the sisters said, was wearing a loose vault suit, something that would hide her shape, and had a patch attached to her right arm that said her name, 'Abigayl,' while the other said 'Gabryelle,' both with a 'y' since they could call each other Abby and Gabby! The sisters chose their names based on some books they read and found those names proper for the two. Abby being the blue gecko while Gabby is gold, G for gold.

"It's sexual; don't stress so much the x. It's just basically mating rituals and how humans have babies, ew, gross."

"Shush! I can pronounce some words great!"

"No wonder I was top of the literature class," something she was proud of.

"Oh yeah, well, I will be top of the sexual education class, sister." They both entered a room that reminded them of the first room they once woke up in those lonely years, noticing how the projector had gained dust; one of the sisters went to clean it while the other set up chairs. One of the robot assistants around placed the reel they were going to watch for their education, and they both sat down with pen and notebook in hand, ready to take notes. "Hope you are ready, sister, cause I won't be missing a second of this."

The film started; at first it was just some explanation as to how humans put their penises inside a woman's pussy with a few cartoonized drawings. "Please stare all you want, sister; I have no desire to breed with humans. Do remember they want to make us slaves, and I find no reason as to why I should be a ****."

"Well, if I get a higher score than you, I will get dessert, so it's your loss. Besides, there are no humans here, so what's to worry about?

"Just saying, why would I ever want to be part of some ugly human breedstock farm? So gross. They are so skinny and non-scaly, pwah." A few minutes passed of the lesson while one took notes and the other ignored it, believing she was above it.

"There is just no point to it; I want to go out there and maybe find more like us! Imagine all the creatures the book warned us about: supermutants, deathclaws, those fish thingies, ghouls. We have endless options for more hybrids instead of stinking, slaving humans."

"I don't know. I like the vault; I get ice cream, and the bots tend to my needs."

"But we work endlessly!"

"That's why I want a community that works for us; I will be the new overseer one day, Gabby."

"That's a dumb idea, Abby."

"And now for a special presentation we shall be showing you an example of how breeding tends to work."

"Wowzers! We're getting an example! I love those," Abby said, ready to get ahead of the sex ed class since Gabby was not paying attention until now.

"Ugh—I think I shall be leaving—" Suddenly some sensual, raunchy music that would be heard from an old porno started to sound; it was trying to mimic one of those disco sounds you would hear in 80s porn videos. "Why is the example playing music?" Gabby said, turning back to see it.

"Oh nooooes, it seems like I ordered a pizza and I cannot pay for the pizza either? Whatever shall I do???"

"Why would the human request a pizza if they cannot buy it?" Gabby said confused, "I wouldn't order without the proper currency; that's just idiotic. See, this is why we cannot let humans order us around. Not to mention look at that woman, all skinny and tall, and those mammary glands she has are so stiff, absolutely fake and gross. Ugh—breeding with humans is the worst."

"Yeah, yeah, I agree, sister." Even if she wanted to learn sex ed— Humans were gross, Gecko species all the way, right?! Or that's what they thought.

"Oh noooooes, the delivery guy is here."

The gecko sisters just kept watching until the girl opened the door, leaving them stunned. The human they saw was a man with quite long hair; it was frizzy and messy, but it looked fluffy like the fur of a bear. His eyes were covered by the pizza cap. He was holding a box of pizza right on his crotch, but what stunned the geckos the most was the build of the man; he was tall, strong, and a hunk. He was sweaty, and you could even see his nipples on that wet shirt he was wearing. He was the visible look of an Adonis. Finally, he said his line.

"Did someone order a pizza with extra pepperoni?" He shook the box left and right as the gecko girls were hypnotized.

"WHA?! WHY IS THAT GUY SO HUNKY! "They both said in unison, thinking the same thing: that man looked delicious, in a sexual way.

"Oh me, me! But oh noees, it's just like—like I do not have money, mister pizza delivery man."

"Hehehe, not to worry. I have the deal for the girl, thanks to the specialized Vault-Tec new form of payment when you are lacking grass."

"And what is that payment?"

"Some good old-fashioned ass" The man opened up the box to show off his cock as the girls both blushed with mouths open, seeing for the first time an actual human penis, so different from what they read in books, but the real thing looked actually interesting, if not a bit weird, but at least not as weird as gecko cocks; those were gross dicks.

"W-what?! Are humans packing that stuff?!"

"SISTER, CAN WE GET HUMANS THIS BIG IN THE VAULT? I WOULD LOVE DWELLERS THAT ARE THAT BIG!"

"He is so sweaty." Gabby licked her lips; she wanted to taste the musk out of that man's pits.

"HOLY CRAP, HE IS PICKING UP THAT SKINNY BITCH! HE IS SO STRONG HUEHUEHEUHEU." Abby was enfatuated with his muscles and strength. Both girls stared at the instructional video that was basically just a staged and filmed porno by Vault-Tec where the main lead was so handsome and hot! After watching it, they were left there in silence, red-faced, mouth open, eyes wide.

"W-woah, ahahah, that was interesting."

"Y-yeah! But like, no biggie, right?" They both tried to play it out as their bodies were burning hot from arousal; they didn't know about masturbation, but their bodies were giving them all the hints they needed.

The film, however, ended with a last small reminder. "If you need more instructions as to how to engage in sexual mating as a human course, please serve yourselves with your other people from our pile stock." A small cabinet opened up, sliding open, showing around 40 more films from the same style.

"..."

"..."

"So sexual education... really hard, right?"

"Hard like that guy's penis."

"And so many long lessons."

"Long like that guy's penis."

"And not to mention that there might be an exam."

"Exam like that guy's penis."

"So many films."

"Many like-"

"Shut up... Luckily we are not interested in that, right?"

"Fuck that, I want to see more."

"GUH?! ALONE?! YOU CANNOT! THE FILM SAID YOU NEED TO SEE IT WITH OTHER PEOPLE, SO I HAVE TO BE HERE TOO, ABBY!"

"I THOUGHT YOU DIDN'T LIKE HUMANS, GABBY."

"I CAN CHANGE MY MIND! THAT'S WHY I AM THE OLDEST!"

"OLDEST BY LIKE A MINUTE!"

"I WILL PLAY THE NEXT FILM." As the gecko girls tried to play another film, they noticed that the projector wasn't currently working; apparently, it needed to recharge, so they would have to stay pent up until tomorrow. "Huh?! Isn't there another of these in a different place?"

"Screw moderation! Let's go to a different room." A small buzzing alarm was heard as they realized there was a problem with the water pipes again. " M-maybe let's not... We still need water to work down here."

"God damn it! So shall we fix it and come up here?"

"Hmmm, I think we shouldn't watch all of them at once; if we do, we will run out of material for our studies."

"I understand, so we should extend it, right?"

"Yes, yes, in this case... for moderation."

"Moderation, yes." Both gecko girls were ****, and they couldn't watch all of it at once, so their new deal was made: one film per day and focus on work all day.

And so it was like that for the first week; the girls would finish their current jobs and try to maintain the vault all on their own for 10 hours, avoiding usual problems and malfunctions and deciding to stop caring about the energy or entertainment rooms as they couldn't keep them up and focus mostly on the water and food, and once they were done, they would go back to the room to keep learning.

The next film was a silly one similar to the previous, a milkman that helps a lonely single mother to clean her garage and her holes through; it was the same actor too, so the girls got a good just standing and getting their pussies wet as they watched, still not understanding at first how to deal with this heat, but it wasn't until the third film where they saw something interesting. The third film was about a lonely next-door neighbor girl who was touching herself at the start of the film.

"What is she doing?"

"Not sure, it's almost like she was trying to replicate the feeling of being bred by a man."

"Such a silly human."

"Yeah, so silly." The lizard girls kept staring, slowly moving their hands to grab their huge breasts under the jumpsuits, moving their fingers down to their holes, not even noticing that her sister was doing the same, just waiting for the moment a new actor or the same one would show up to fuck the girl, and 5 minutes into the film there was a human guy pounding the ever-loving shit out of the girl in the bed. At first they wanted to just watch but found out that gooning and schlicking to the film felt 100 times better than just watching and drooling at the sight of it.

Once the film was over, they must've cum like 3 times without even noticing; the chairs and floor were absolutely gleaming from the liquid they kept on squirting, and they shamelessly left the room trying to act normal.

"That was an alright film," said Gabby, her voice shaky, sweating like a pig.

"Pretty good, but I prefer the original actor; he is my type of man, hueheuehe." Abby was more open about it, however, almost in the same condition as the two, their suits completely wet and ruined as if they had gone to a pool. "I shall… head to my room now, for purposes."

"Yes, me too... for purposes as well." Both girls stared at each o ther in silence entering their respective rooms, that night the vault was filled with howls and screeches from both girls masturbating non-stop in their beds to the point their whole rooms were smelling of femcum and this ritual would persist for months, being able to watch every single little film, magazine, review or any content that had human males in it, they really had a distaste for the women but the men really got them crazy even going as far as to create the human appreciation club where they would discuss which actors were their favorites, make a ranking list of every single film they watched, the best one so far being 'I got lost in the woods but thankfully a group of lumberjacks found me' and the worst being 'Grandpa and grandma try it for a last time' Not only was sad to watch but it was too... floppy... They even started making their own fanfics and review it between them since their content was running out with whatever imagination they had... 99% of their fanfics for some reason included shortstack gecko girls being the main characters getting seduced or seducing a human male, sometimes even cuckolding a human female and calling them the weaker gender species.

They had a bit of a human kink for certain, and their lifestyle had become less dull and boring since then... Sort of.

"You know? I have been thinking, what if we try to create our own film"

"Cannot do."

"What? Why not?"

"We have only 5 percent of our electricity working for the water and food; we cannot afford anything more. Every time I go down there to fix it, it's just a mess. This vault wasn’t meant to be run by 2 people, so all we can do right now is keep everything working until it breaks."

"Ughhhhhh..." Her sister looked sad, giving her puppy eyes before starting to whistle... Or trying to; it was more like blowing dumb raspberries, as they couldn't whistle.

"What?"

"You know... There is anooooother option." The gecko sister smiled.

"Noooooo..."

"COME ON! IT'S BEEN... I have no idea how long it's been, but it's been too long. Why not go out there? The book says we resist radiation; the world must be less irradiated. Reclamation Day, whatever! Let's go out and find a ma—I mean, find something to keep the vault running." Abby has been suggesting lately to go looking for humans to live in the vault and help them maintain it, but it's been so hard to convince her sister.

"We cannot do that! You read the books, you saw the movies; all people out there are crazy bastard monster mutants that will try to get into the vault to eat our legs and eyes."

"HOW CAN WE KNOW THAT IF WE DON'T GO OUT EXPLORING? And then we come back here with our finds, our new home."

"I want to go out! But I don't want to get stuck here all my life either, so when we go out, I want to be prepared to explore the world."

"I WANT A HUMIE KINGDOM DOWN HERE!"

"WE CAN FIND MORE LIKE US OUT THERE!" As usual the girls were fighting about what to do with their lives, but they both agreed on something right in between: they needed more people. And luckily the American gods would eventually answer their prayers.

Out of the vault, in what seems to be a desert where no single vegetation grows, is a man pushing a shopping cart along the road, stopping to check his canteen with no water... Nor piss at this point, knowing he was running dry and that the next city or settlement was a few miles away; he wouldn't be able to make it. Maybe if there were cockroaches to kill and eat, he could manage, but there was absolutely no way he could make this trip.

However, that doesn't mean it's impossible.

A year ago he had heard about a vault that was around this zone. Vaults are usually the worst place to go if you are an outsider; there is always the threat of crazy vault dwellers, cannibals, clones, and mutants. The vaults are always filled with the craziest of people or the most naive dumb ones the world can find. He would be safe if it was the second, but he was afraid of the first one, Vault 18. He heard they found some jumpsuitslaying around the desert, holding the remains of the once dwellers that lived there, but he also heard the skeletons were messed up; some were dog-like while others were cow-like. To hear about vault animal dwellers like werewolves or some ancient creature shook his heart to the core, and then there was the infamous vault full of deathclaws. It was scary to think about it, but it was the only way for him to save himself, and if anything...

He looked down at his cart with a grin...

He still had something to trade with them. He searched around the vast desert for minutes, pushing his cart until he noticed what seemed to be a shack coming out of a small mountain. Usually that's the sign for a hidden vault, but he was re-affirmed as he saw a jumpsuit jacket stuck under a rock. Coming close, he grabbed it and saw bones coming out of it, little little bones. He was afraid to watch the skeleton, but he decided to not bother. Some things are better to leave unresolved.

He entered the place looking around it; it looked nice enough, clean enough. One of the maintenance bots that was supposed to take care of the door stopped functioning as its remains lay there on the staircase. He turned to look around the place and saw there was a mirror with the phrase 'Be dashing before you leave; first meetings are important.' The mirror was covered in grime and dirt, but the guy at least had some decency to try and fix his look before meeting the vault dwellers.

He was still quite young, mid-20s. He stopped counting how old he was after a while, but he knew he wasn't deteriorating nor falling into pieces either. There was barely any sign of decay by radiation or strange mutations in his body... Well, almost... He still found some part of his body larger than the usual he had heard or seen; he had enough caps if the dwellers were also dealing with that, so he could say he was a bit rich as well. He was tall; that's good. The boss at the farm he used to work at always said tall men are needed, and working at Brahmin farms and cornfields really gave him a bulky, strong body, not to mention he had been carrying and lifting things since he was born; he could tell his body would collapse one day if he kept working hard like that, so perhaps he wasn't half bad.

The scars didn't help, so he would hide them as best as he could.

He pulled out some Brahmin oil (it was just grease) and poured it all over his long, messy hair, trying to fix it as best as possible, his face covered in dirt... Nothing to do, he would have to say he got dirty in the way, really; he smears the grease all over his face and will look like his teenage years all over again.

He stood in front of the giant vault doors and... Was unsure what to do; should he knock? Scream should he do something? He looked at the camera that was still beeping; a light was on, meaning someone was watching, right? "H-hello? Is anyone there?" No reply, but that didn't mean he would just give up and let it be. "My name is... Andrew" Although his real name was Rolling Pin because they cut the umbilical cord with a rolling pin after various disastrous attempts. "Hello?" he kept calling, thinking someone was listening.

Inside the vault, both sisters were just discussing, talking, and fixing whatever they could from the vault as usual, not knowing their biggest obsession was out of the vault doors right now, speaking to himself alone in the camera, and what seemed to be 30 minutes to 1 hour had passed since he arrived; he wasn't going anywhere; he couldn't, after all, there was nothing out there for him, so he talked and talked and talked until one of the two sisters noticed. Something that eventually came: Abby was on cleaning duty, as they couldn't let the vault get more dusty, as the dust particles could filter into their water system; it would be easier with more cleaning bots around, but they couldn't power the remaining electricity to the rest of the vault. She headed near the entrance, hearing some speaking sounds, wondering if they left one of their movies at the door, but it's weird; they don't tend to schlock somewhere else besides the 'sexual education room' and their bedrooms.

She came to the door and saw... A man, a tall hunky bulky messy-haired man, reminded him of her first love at the pizza porno film, although he was a bit dirtier... But it was a man nonetheless; she looked at the microphone, panicking for a moment, and quickly answered, "H-HELLO?!" Her voice, scrappy and rough, trying to moisten her own tongue to sound more 'seductive.'

"HELLO?" He said, happy to hear a voice, "Hi, my name is Anders- or Andrew. What did I say first?"

"HUMAN?! I mean, hi, another regular person... I am Abby; it stands for Abigayl."

"OH THANK GOD! Hey, I just came to trade. I mean no harm, and I uh- I need water and some supplies. I swear I have no weapons, nothing on me."

"... D-do you have a pizza?"

"A what?"

"Wi-with extra pepperoni?"

"...I d-do not. I have no idea what that is."

"Oh, ahahah, okay, are you here t-to deliver my milk, huehehueh?" He was already getting creeped out, but he knew what milk was.

"I ran out of Brahmin milk a week ago."

"What is a brahmin?"

"Look, I will be honest. I am dying, and I need some water, and it would be great if you would help me with some supplies. I will do anything."

"Oh my goooood, this is so good; it's like the film 'My teacher is failing me and I need to pass my grades' is just like that plot!"

"What?"

"STAY HERE! I need to talk to my sister to see if I can let you in."

"Y-you will? THANK YOU. YES, PLEASE. THANK YOU."

Abby ran out as fast as she possibly could to find her sister as she screamed everywhere for her. Running through the hallways, the human left outside heard the screeching for a moment, wondering if maybe he should actually shoot them as soon as they open the door, but they sounded happy to see him; maybe they are the naive type of vault dweller and should wait... But he decides to wait behind the staircase in cover just in case.

Gabby was at the lunchroom eating, writing her fanfiction about a gecko girl rescuing a group of three hunk males from the claws of ghouls, and as a reward, they all bred her non-stop for three days, but she was missing some sort of spark to get the writing together. "Ah! Yes, I know..." She decided to describe the gecko girl as a golden, short-stacked, fat-titted girl; that would make the writing hold on its own.

Soon her sister barged into the room screaming, "HUMANS!"

"It's not today, it's tomorrow, our reading room. I hope you improved your last writing; I didn't like to read the gecko girl and the deep-"

"THERE IS A HUMAN OUTSIDE THE VAULT."

"WHAT?!" Her sister jumped out of her seat. "HOW HOT IS HE?" She grabbed her by the arms, shaking her, but then her instinct of survival snapped her out of it. "Wait, no, no, this could be a trap. What if they try to enslave us?"

"He is a human male."

"REALLY?! Wait, stop. I am serious, if we are not careful"

"HE IS TWICE OUR SIZE."

"FUCK?! But if we let him inside, he could hurt- "

"HE IS SO FUCKING HUUUUUNK; HE COULD CRUSH MY SKULL WITH EASE."

"SO HOOOOT?!" She coughed, trying to still rationalize as much as she could. "But still troublesome... Sister, for as much as I want him inside, we cannot endanger ourselves to be grabbed, put in chains, dragged all over the floor, or walk on all fours and be-" She took a deep breath, sighing almost in relief as she was getting so aroused at the idea. "The pet of a hunk human... Their personal breedstock, hueheuhe... W-we need to make sure he won't kill us and do other bad stuff; he is a wastelander, after all."

"Can't we just… let him?"

"I don't believe so, sadly we shouldn't, sister, BUT! I need to check him out regardless." Gabby stood up as well as they both headed for the entrance where the wastelander was. They checked the video feed, seeing him sitting on the stairs, holding an old cracker in one hand and what seems to be the organ of a creature in the other; he is deciding what to eat. Gabby took a deep breath, trying to keep her composure. "Observe how it's done, sister; this way we will know his nature." She opened the microphone to speak. "Hellooooo~ Handsome." Her sister hit her on the face as they started to fight over the telecom, a lot of wrecking noises being heard by the wastelander, who was a bit scared of what was going on; he was certain there was something off about this vault.

"G-GIVE ME THAT!"

"NO NO! STATE WHY YOU ARE HERE, WASTELANDER!" They were now shouting.

"Uh—I have come to bargain." The sisters stopped looking at the video.

"And what do you offer?"

"I need food, water, uhm- and anything else you can give me; I don't want to stay at your vault." Although he would REALLY REALLY LOVE IT. "But if you invite me in, I will gladly take it and stay around and help; I am just tired right now, and I need help, that's all."

The sisters felt a bit bad about him; however, she needed to play this by the book. "What do you offer, hu-wastelander?"

"I have..." He looked at his things: caps, a broken shoe, paperclips, the motor of a blender, the exhaust of a vehicle, hard to say what vehicle and the most important thing being the object he wanted to sell at the wasteland for a whole 'lotta' caps, the fusion core, two of them actually; he didn't steal them, nor take them from the Brotherhood nor anything like that, he actually was able to find them... On some conveniently placed corpses inside of T-52 armors, he would've brought the armors as well, but he had absolutely no fucking idea how to ride them, so he hid them for future use. "I have fusion cores, two of them; just give me enough to eat and maybe a weapon to defend myself, and I will give you one."

Abby looked at Gabby as she whispered, "Sister, aren't fusion cores-"

"Yes..." She realized it. "Yes, they are. Regardless of this human hunk body, a fusion core could power this vault; we could get the bots up and running and working for us again like in the first year. We can make them focus on cleaning the installations below, and we could start setting up a farm even if we do it right... But we are not good with electronics..."

"Shit, we should've taken more classes on that! I told you we would need electricity eventually!"

"We needed to focus on food and water! ... No, no, I won't fight you, sister; this is actually good... However…" She looked at the man; she was afraid, aroused, but afraid. She loved humans; she wanted a human to cuddle, but she knew that a wastelander could kill them if given the chance.

"Sister?"

"J-just... Let me handle this." She opened the communications again. "Wastelander, we want nothing of you... Besides the fusion core... However, I propose you a new deal. How good are you with electronics?"

Andrew, Anderson, rolling pin—whatever he wants his name to be, think about it. "Umm— I am pretty good, I would say." He once fixed a blender, and he can put weapons together; that's like 99% better than most out here. "I am average; I can use computers and uuuuh— I can fix some things... I once fixed a Pip-Boy before." He just stroked the thing, and somehow it started working, but he had some actual knowledge for it.

"...Okay, here is the deal, hum—Wastelander... We want the fusion cores, both of them, but in exchange you will live here if you want." He stood up.

"Really?"

"Yes, really, but you need to get rid of the rest of the things you have, so throw away your backpack—

Her sister quickly interrupted, "AND TAKE OFF YOUR SHIRT! ... In case you, uhm, have a weapon."

"Uh, sure—whatever?" He threw away his things, no weapons; he only had one faulty Chinese pistol that almost blew up in his hand and also took off his shirt. He had a shiv hidden in his pants, which he also threw off. "Is this good?" He turned around to show he was unarmed, just the cores in his hand, but no response came... "Hello, is this good? Hello... Am I doing this right?"

Inside the vault, both sisters were going at it as they had started touching themselves, watching the human undress. "Fuuuck~ Do you think we can get him to take his pants off?" Abby was grabbing her own pussy through the jumpsuit that had been soaked down there.

"nNGHNNGGHHH N-NOT YET! If—if we do that, we might scare him off." Gabby grabbed her tits so harshly and roughly as she stared at the man. After a few minutes of uncontrollable shlicking and gooning, both girls left the floor where they stood a wet mess and their jumpsuits sweaty and soaked.

"Ooof... Okay, let's let him in."

"Awesome... Oh wait—" Abby grabbed the comm as the wastelander was tired of waiting. "What was your name again? Also, how good are you with, uuuhm, geckos?"

"Oh, uhm- My name is..." He was unsure once more what name he told them before; he simply forgot "... Pin... Just pin..."

"Pin is a great name. Geckos, how good?" It was a strange question, but he answered honestly.

"I would say I am pretty good at keeping them controlled; they won't become hostile with me around. I had one as a pet in the past, on a leash and everything, and we had a good farm for them." They sold gecko eggs and meat, but he didn't say that part.

"Nghh... A pet, you said? S-so hot..."

"What?"

"We are letting you in! Jus-just don't freak out." That didn't help; that didn't help at all. He was ready to start running with the cores if some creature came out of it. The vault door opened up, and then he saw... Something that he was never expecting.

"H-hello, humannn~" Both sisters looked at him like a prize; he was gorgeous in their eyes, but more than that, they had a predatory look as if they were going to feast on him. On the other hand, the human was absolutely stunned by what he saw; it was not dwellers, not the usual ones, it was geckos... He felt glad he didn't say he ate geckos in the past, but goddamn it, these geckos were not only sentient and could talk, they were stacked, hot, lecherous, and lewd, much more than most women out in the wastelands. His last girlfriend had the mutation of an arm similar to a supermutant, and around his town she was considered the 'hottest woman,' but these gecko girls were absolutely stunning compared to her; sure, a bit small, almost around half his size, but most of their height went to their assets.

Art by goldcrustedchicken

"Ooooh boy, you are geckos."

"YES! YES, WE ARE HUMAN! WE ARE GECKOS!" Abby shouted excitedly. "BB-B-BUT DON'T WORRY! We won't hurt you! We love humans, but most humans are afraid of us sometimes hahah." They weren't going to mention they never met another person besides them; their communication and people skills are the equivalent of a 1 charisma point.

"We promise you safety, water, food, anything you need if you help us; we have an energy crisis, and those core fusions could keep this place running for years! Decades, I would dare to say centuries since... No one uses much energy these days."

"YES! AND WE WILL KEEP YOU WELL FED AND HAPPY. WE PROMISE. PLEASE COME IN!" Abby was shaking while Gabby was trying to hold herself back from trembling.

Pin, on the other hand, knew geckos were ferocious and voracious and uncaring of their safety when fighting, but these two weren't trying to eat or kill him; they easily could have as well. He had no weapons, and they had maws that could certainly tear him apart... Being sentient also helped. What were his options again? Scorching radioactive sun that would eventually kill him in a desert with no one around for miles... Or sexy busty lizards.

The option was kind of easy.

"Thanks for receiving me in your home." Both sisters shared a gaze, a happy smile, and excitement in their faces; this was the best day of their lives. The human came inside, and as soon as both feet were inside the vault, Gabby shut the door at the speed of light; she wasn't letting him go anymore.

"Woah, this place is... is huge..." He started to walk, admiring the emptiness of the halls and suddenly stepping on something wet, almost slipping. "Uh, you have a leak, it seems." He had slipped with her cunt juices from before, a thing they both didn't say.

"YUP YUP HAHAH LEAK ABBY FIX LATER I AM ABBY, HI HAHAHAH." She was euphoric; it was almost scary in his eyes, but with his height that fear disappeared because he was able to see down her cleavage and stare at her sweaty, wet, chubby, wobbly, moist body. It's been a while since he has been with a woman too; he wanted to be respectful still.

"I am- I will be of help in your vault. Thank you for saving me, you two."

"YOU ARE-" Gabby, who was about to shout again, composed herself again, but it was so hard. "You are welcome. I am G-gabby. I am my sister's sister, and I like to write stories." She said that last part so slowly; he was wondering if they were having a stroke or something.

"Cool... Uhm, do you have water that I could drink? I am so thirs—" Not waiting a second longer, both sisters ran out to look for some water for him. "... okay." He stood there, not wanting to move, afraid of finding another dweller and being shot on the spot. He smelled himself; he could use a bath later too. He heard showers were a thing in this place.

The girls came back running, Abby holding a bottle full of water and Gabby holding a bucket not fully full but with plenty of water. "HERE!" They both scream for him to drink; it was the most clear and pristine water he had seen.

"Woah, is this straight out of the toilet?"

"What? No ew, gross, this is from the sink."

"Mine is from the shower!" Gabby replied, "Both look so great." He took a large gulp from the bottle, drinking all of it greedily, and then from the bucket; it was the best water he had ever tasted...

"Fucking delicious... Ah, sorry, language, right?"

"I don't care! Say many curses."

"Cool, cool. Uh, you lizard girls are awesome... Can I ask something that is not too personal?"

"Sure!" Abby was making ideas in her head; he was probably going to ask her if she had a boyfriend or whether she was home alone. Maybe he was going to ask if she wanted sunscreen on her back.

"Go ahead." Gabby, on the other hand, was thinking he was going to ask for a shared shower to save water; maybe he was going to ask about how to have sex since he was a virgin or how to have a higher grade on his school score.

"How many are geckos here?" Their smiles changed to a poker face, and then they looked tense.

"H-how many do you want?" Abby asked

"Uuuuuuh," Pin wondered if there was a huge whole population. "As many as you have?" They got nervous; maybe the human wanted a lot of gecko girls? That was cheating! Abby didn't like cheating! She should be the only one praised by the human.

"We... have only two."

"Oh so the rest is human?"

"Two in total?" Gabby looked at her sister, answering that it was not a good idea; the human could still overpower them and hurt them. But as the human heard that.

"Wait, so it's just you two here?"

"Three with you..." Abby smiled.

"AND IF WE WERE TO DIE, YOU WOULD BE STUCK HERE FOREVER." Gabby grinned, hoping the human wouldn't try anything if she said that, but Pin felt like he just won the lottery; he had a whole vault for himself... AND some weird gecko girls... He can live with this. Yes, this is it, this is the place he wanted to live. Fuck the wasteland, fuck the desert, fuck everything. He didn't want to wake up to roaches eating his face or supermutants **** and forcing people into bath acids, no, just a comfortable nice vault... That looks like it has seen better days, but this is 100% better than the wasteland.

"Awesome... I think living here is great. Could I get a tour?"

"You could get whatever you want, handsome." Abby smiled, her tongue lolling out as she was panting from being so close to him.

"R-right?" Pin found it weird being called handsome. Were they mocking him?

They went for a walk through the vault. Pin was taken to different rooms inside the shelter; first it was the vault door, explaining what it's for and how he would never be able to open it without them, just to stress he cannot leave without them. They want him here for as long as possible and to not kill them, that is. As they turned back, he looked at their asses and lifted tails; it was like they were putting on display their butts for him to stare at as much as he wanted to, was that their plan? And if so, they weren't wrong, he was staring alright, he was absolutely memorizing every piece of fat in their butts in his mind. The only time he is able to look at them is when they are discussing with each other; he doesn't want to get caught leering at them, they might think of him as a freak... Which he is not. I mean fucking gecko girls? Who would do that right? Hahahaha.

They went to the elevator, explaining to him that it was out of service due to the lack of electricity, so they had to use the stairs. Most rooms he passed were black and dark; not a single person or creature was there; the whole thing was empty just for the two. "So where is everyone?"

"They died before being born."

"Ah... So it's just you two?"

"Yuuup, the bots took all the corpses out of the vault."

"That explains things."

Next was the living quarters. "This is my room, this is Gabby's room; we are in front of each other... And this is your room." Abby pointed to a room next to hers.

"WAIT NO, THAT'S NOT HIS ROOM!" Gabby lost her composure once more before correcting herself. "This is his room." Gabby pointed to the room next to hers.

"WHAT? WHY IS HE NEXT TO YOU?"

"CAUSE I AM THE SMARTEST ONE OUT OF THE TWO WHAT IF HE HAS QUESTIONS ABOUT THE VAULT" They suddenly started pushing each other, grabbing each other, fondling each other's big wobbly tits, chubby bellies, it was really hot seeing two girls fighting for where he sleeps, specially with so much meat in their bodies. "W-what if I take that room?" He pointed to the one at the end of the hallway being at equal distance of the two.. But not next to them, they decided it was better.

"Sure, sure."

"Of course, of course."

Next was the storage room, and dear god, if this vault wasn't functional, he would've robbed this place so hard; there has to be at least 10 thousand caps worth of things in the room, not to mention weapons and medicine too... But he won't be needing it anymore; fuck being rich in the wasteland, he will live happy and in peace inside a vault.

Then the overseer's office. "This is the overseer's office; it's where the person that leads this room lives, coincidentally," Gabby pointed at herself. "I am the overseer this year."

"We take turns each year."

"Oh... That's nice, I guess? So Gabby is the leader?"

"When we don't agree on things, we go with her plans, so for now, yes... M-maybe you can be overseer next year huehuehue."

"Well, I am in your care, Overseer Gabby." She felt her pussy getting wet hearing those words, whereas Abby was boiling with jealousy.

"SINCE THE NEW HUMAN ARRIVED, I PROPOSE A VOTE FOR OVERSEER."

"HUH?! NOT NOW YOU IDIOT!" Gabby smacked her in the head. In Pin's eyes, the girls fight a lot; it must be hard seeing they have lived together alone for god knows how long. "Let's continue the tour."

Diner, water treatment, medbay, science lab, garden, water purification, and Nuka-Cola bottler were all checked, half of those places not being used really as power was out, but then they reached the final room, the power generator. "This is where you will work; if you get to power up more rooms in the vault, you can stay here...." Abby got close to him, hugging his leg. "Fooooreeeevveeeeerrrrrrrrr~" Creeping a smile as Pin pushed her away a little, not because he disliked her; her tits hugging his leg, warming him up, makes him... hard... He didn't want to scare them away. Make them think he is some ****.

"So what do you say?" Gabby mentioned.

"I love it; I will stay for as long as you allow me to, please. Thank you."

"For as long as we want it's good." They stared at his pants, trying their hardest to not rip them apart... MAYBE there was another way.

"Heyyyyyyyyyyyyyyyy, if you are staying in the vault, you shouuuuuuuuuuuuuld get vault clothes, right? Jumpsuits, there are a loooot of jumpsuits for many species; I am sure we can find something that fits you."

"Oh, uh, yeah, please, thank you. Sorry about my pants; they are all dirty and raggedy."

"Oh, it's okay. D-do they smell of sweat?" Abby asked, hoping to sniff them.

"Uuuh, more like puke and dirt." Her dreams shattered in an instant.

"We can get you clean clothes... You should also clean yourself."

"Clothes can come first."

"Let's do clothing, yes please." Pin was behaving so well as if to not raise any alarms; usually he would be more rude, but for the first time he felt like he could be safe here.

"Let's get him sorted, sister." They went to the Outfit workshop, one of the most 'useless' rooms since it was only she and her sister, but they liked to come here and check what humans wore and get ideas for themselves. They started to look for the jumpsuits while Pin just stayed standing there, one of the sisters approaching with a measuring tape, measuring him from his feet up to his chest.

"Need help with that."

"Ngyeeeh nouh I can do it" Abby tip-toed, the tape barely reached his chest once more but then she got an idea. "I think I know how..." She got on top of his shoes, hugging his body, her face pressed against Pin's crotch as she felt the soft bulge of his cock on her face. "HUehueheyeheheUEHuehyeHEU." Her laugh giving her away as Pin picked her up and distanced himself a little; that was a close one; he almost got a boner from the horny girl. He grabbed the tape, measured himself, and handed it back to her.

She gave the measures to her sister Gabby as she looked for the perfect jumpsuit, and she found it; however, it was meant for a tiger hybrid, so it had a hole on the back for the tail... It had a hole on the back for them to stare at his ass... "Hue," Gabby's chuckle being lighter and softer so she wouldn't be heard, unlike her non-so-subtle sister. But she could do more than this; she looked for another jumpsuit, one that was... Just. The. Right. Fit. She had such a grin as she was having malicious thoughts and finally found something a bit smaller.

"Perfect jumpsuit" Gabby went and handed it to Pin.

"Oh, should I try it on?"

"Yes," both sisters agreed in a bit of a creepy way; it was odd seeing them talk at the same time, like ghosts.

"..." He stared at the sisters who were in the room. "Uhm... So I will try it right now."

"Yes, of course." Still in the room, not leaving.

"... I would like to try it alone, since I will be naked."

"We are aware." He thought that maybe they thought he had a secret hidden weapon; wouldn't be the first time with how crazy everyone is in the vault. However, he also remembered he is twice their size and weight, picking them up and leaving them outside the room as he put it on.

"... He touched me heueheuhe." Abby was losing it once she was outside as Gabby just remained quiet as to how strong humans were...

After a while Pin came out wearing the jumpsuit. It was so good, so silky, so smooth, clean, soft, lemon-scented, and... Tight, the suit really, really hugged his body, every little bit of his body's muscles were practically hugging him, the worst part being it did nothing to hide his cock, so he would have to be super extra careful to not scare the geckos away. Eventually he came out, showing his body to them.

"Looks good, but I could use a shower to not stink it up." The geckos were dumbfounded, staring at his muscles, those nice abs, those strong pecs, those huge arms, and that fat fucking cock in their faces; they wanted to bury their faces in it and start sucking hard on that. He noticed the gecko girls staring too intensely. "Uuuuh, where can I shower?"

"In my room" both girls said.

"Is there no shower in mine?"

"... I guess you could shower in your room," Gabby said, looking away.

"I want you to shower in mine still." Abby smiled as Gabby shut her maw up.

"Okay, should I just splash water on me or…"

"Use soap. Have you seen soap before, humie?" Gabby said with a smile, being the most normal from the two.

"I have heard of it."

"Let me give you some of mine; make sure to not eat it. We use a lot of soap, but we have a huge amount of it too, so don't worry." They would go back to the living quarters; he would double-check where both Abby and Gabby stayed and not too far, just around 30 seconds away walking, was his room. The place was a bit old, dusty, and unkept, but this was by far the best room he had been in years; it had a TV, not working since there was a lack of electricity on this floor, and there was a shower as well... He has never had a shower before, a proper one that is.

"Sooo, uh, thank you for everything." Pin said

"Yup." Both girls said this as Abby blatantly asked, "Do you need help washing?"

"Hahahah, I have it from here." He would close the door using the card as both Gecko girls stare at him from the window; he had no privacy here, it would seem, but inside the shower he did. He waved goodbye at them as he entered the shower room, disappearing from their sight.

"He looks like the actor from the pizza delivery guy, right?"

"OH MY GOD IS THE HAIR RIGHT?!" Gabby was finally getting a bit loose, losing the superiority and well-educated personality she was putting on in front of the human. "He is so strong too! I FUCKING LOVE HOW STRONG HE IS; HE CAN LIFT ME EVERYWHERE...B-bb-but he could still be dangerous, so it's better to keep a good eye on him."

"Yeah, I wish we could keep a better eye on him, especially with him in the shower."

"Yeah, he is in the shower, is he not?"

"Yes... Very showery and naked right now."

"All alone, naked, showering." Gabby placed her hand on the glass as Abby did the same.

"Just a room away," Abby suddenly clawed the glass, leaving the scratch marks behind.

"Or a room next to it right..." They looked at the empty room next to Pin's room, abandoned but connected, meaning they were sharing the same pipe. They both got the nastiest idea possible, running quickly back to their rooms, getting their tools, a drill and a wrench, and running to the next room, entering the hallway closet that connected to the bathroom of that room and placing their ears in unison against the wall as they heard walking and tapping inside the place.

"HUEhueHEUHeuHEUhuehEUHeuh." Both girls laugh like gremlins as they start making holes in the shower where the human was. In the meantime, Pin was taking off his clothes, not minding the drill sound, mostly because he had never heard it and thought it was the pipes just moving water, so he ignored it, but this is not because he was naive but rather ignorant. Although ignorant, he always had a proper education, somewhat. His mother raising him proper enough to not be a psycho killer, murderer, cultist, or **** but also enough for him to understand that the wasteland was full of traps and danger.

However, being with the gecko girls had made him grow wary; he was worried... He thought that at any moment he would pop a boner or an erection, and the girls would deem him a freak or a monsterfucker, which is something he didn't want. He had heard of people crazy enough to go and try to get deathclaws for sex or make women supermutant, things that have been deemed the most depraved, lecherous acts possible in the wasteland. He couldn't be thinking in reality about fucking some gecko women, right? After all... They wouldn't do the same with him, right? This must've been a test, and he is proving that he can be a proper, civil, well-behaved vault dweller; even if he had a big, throbbing, fat erection right now, he wouldn't try jerking himself off. Because surely well-educated vault dwellers like them wouldn't either.

He opened up the shower, feeling the warm water hit his skin. He looked up at the faucet, closed his eyes, and smiled, hoping that this was the life his mother always asked him to have, one where he could relax and live a simple life...

Speaking of the vault dwellers... "Get off! This is my hole! MAKE YOUR OWN HOLE." Abby pushed Gabby away.

"WRENCHES CAN'T MAKE HOLES, YOU WENCH." Gabby pushed Abby away, trying to get a peek of Pin inside the shower.

"OH FUCK, HE IS NAKED! HE IS SO FUCKING NAKED! HE HAS A DICK, HE HAS A BIG DICK, HE HAS A 9 OUT OF 10 DICK! WHY IS THERE STEAM? CLEAN WITH COLD WATER, HUMAN!" Gabby pushed Abby finally so she could get a peek.

"Oh GOD! HE IS BIG, BIG! HE HAS ALL THE GOOD STUFF, TWO BALLS, ONE DICK; HE IS A PERFECT SPECIMEN!" She grabbed her tits as she was getting a good look, fondling them, rubbing them, massaging in circles, teasing her inverted nipples, and getting a finger inside her cunt as Abby pushed her away.

"OH FUCK HE IS BENDING DOWN HE IS BENDING DOWN, HE HAS A CUTE BUTT, HE HAS SO MANY PUBES I WANT TO SMELL HIS COCK SO BADLY! LET'S GET HIM ALL SWEATY AND LICK HIS BODY OFF NEXT TIME HUEEEEEEEEEEE." A loud screech was heard as Pin looked around as to where that came from as Abby spread her legs, squatted, and started to furiously finger her cunt like crazy. Both girls kept describing what he did all while they masturbated like crazy, even going as far as to stick the wrench in their hot musky pussies, getting the hallway closet completely filled and drenched in their juices and the stench of their miasma stuck to the walls of it, and once his shower was done, they would leave the room acting shamelessly like if nothing had happened. The room was absolutely filled with the smell of their bodies, and the closet was drenched, like a ghost had passed through there.

They passed next to the window, seeing Pin about to head down to bed. He noticed the two peeping at him and smiled, waving goodbye at them for a second time. This time the girls gave back the gesture, waving goodbye.

"Well, that was informative," Gabby said, heading to her room.

"Yup, very much so."

"See you tomorrow, sister; good luck fixing those water pipes."

"Likewise, sister, good luck at the garden." They both entered their rooms, thinking at the same time to go masturbate one last time, but they actually felt too exhausted as they both collapsed in bed; they never had to put this much effort for a person, so they decided it was better to go to sleep.

But even the dreams of the 3 vault dwellers were filled with fantasies as for what awaited in the future.

Abby's dream

It was quite romantic, trying to set up the same scenario of one of her favorite films, 'Lovers at Saint's High,' where at college a boy tries to get into a girl's heart by the only way they know, a romantic date and some unholy sexing. Abby was wearing a cute little skirt and one of those school shirts like the film shows, the miniskirt really showing her ass, whereas Pin had a nice sweater and long pants. They were eating dinner, having fun, playing games, and laughing. She was carried into her bedroom in a bridal style and gently put into the bed.

Pin getting on top of her and starting to remove her jumpsuit, kissing her neck, and telling her about how her scales are the most pristine, beautiful scales he had seen and how her eyes were so hypnotic and wonderful that he could stare at them all day, he moved his hand underneath her shirt, making her tremble, scared, and suddenly, she woke up. She checked the time; it was not time to wake up. She went back to try and sleep, to try and picture Pin kissing her lips and telling her how she was so perfect and how he was going to make love to her, a growing arousal she couldn't satisfy, leaving her pent-up all night.

Gabby's dream

Gabby's dream was totally the opposite of romantic; it was rather harsher. Gabby just pictured herself calmly sleeping in her room, totally exposed, not even wearing a blanket, just her jumpsuit... At first... But then the doors slide open, and she awakes, groggy, confused, staring at the large human standing in the doorway. "What the? What are you doing here, Pin?" The gecko girl felt a menacing aura coming from him as he approached silently, like a killer would do, instead of running or screaming. Gabby hit a dramatic pose in the bed, exposing her chest, putting her arms behind her head, and lifting her snout. "Oh no, why are you approaching all menacing and such?"

He got on top of her, grabbing her by the throat. "Are you going to **** me? Leash me? And fuck me, use me as breedstock, get me pregnant, and then **** me to be your sex **** like you always wanted me— I mean, wanted to? You’re gonna make yourself overseer, and **** me and my sister to service you, aren’t you?! Days and nights in your bed with no breaks!? No... No, don't do it." Her clothes were ripped apart, leaving her body naked and exposed. He was such a strong, violent animal; she was powerless to stop him. The best she could do was spread her legs and shake her hips for him, showing him her wet cunt. "If you are going to take me, just do it; just leave my sister out of this; just fuck me and only me and NEVER ANOTHER PERSON AND—" She woke up as well, looking at her jumpsuit that got wet from her screaming in her sleep.

"Fuck..."

Pin's dream

Pin was never a proper dreamer; most of his dreams are fever nightmares, not this one. He was in a completely orange room, lying on something soft like a bed, with someone cuddling next to him... Two people actually, both gecko sisters hugging his body, absolutely naked, rubbing their bodies and grinding him, one on his leg, the other on his chest. She would see them both change colors occasionally in the dream, so he didn't know which one was which. Both girls licked his chest with those long, wide tongues of theirs before talking at the same time like hungry succubi.

"Tell me Pin, is this all you dreamed of? Aren't you sure you don't want more? Because we could give you more." Both Gecko sisters approached and started to kiss his lips, deep and passionate, all three tongues starting to wrap around each other, losing themselves, melting, the tails of the girls grabbing his cock, pumping it up and down over and over again.

He woke up, hard as hell, unable to move at first. Noticing the erection he had on his pants, he wanted to rub one out but decided to sleep it off as best as he could. He was a vault dweller; he should behave properly, right? This is how everyone would behave...

Morning after

All three woke up at the sound of the alarm; most things were mechanized here: daytime, nighttime, and sleep time. At least with how little energy they had, at least for today, they went and took their respective showers, with the exception of Pin, who just organized his room, and left their rooms, all three staring at each other as they had such deadpan faces, expressions that showed they were tired from some lack of sleep last night due to different but very similar reasons.

But nothing a good old breakfast cannot fix.

The geckos and Pin would head to the diner, looking at what food reserves they had and what they could make. They ended up having some beans, toast, eggs, and coffee to start their days; it was one of the best meals. Pin has ever had, whereas for the geckos this was just the normal thing they experienced.

"So how was your first night at the vault, Pin?" Gabby asked, scooting closer as they ate from the right side.

"I woke up without having to shoot at something, so I would say pretty good."

"Is the outside really that dangerous, Pin?" Abby scooted closer from the left side.

"It's the fucking worst; there are so many things you can die from. I am not sure how I am even alive."

"Sounds awful, but I am sure there are many good things from the outside world, right?" Gabby scoots closer and closer, wanting to learn about the wasteland.

"I mean, I guess? I liked Nuka-Cola when I could drink it... My mom used to make good Brahmin steak too.

"What's a Brahmin? Is it dangerous, or can we bring it to the vault?" Abby scoots closer, closer as well.

"It's like an animal we can get meat out of, and it's good for transporting heavy stuff. To be honest, the most friendly creatures I have found are you two." Both girls scooted close enough so their butts were touching Pin's hips.

"Is that so?" They both snickered as they were complimented, although Gabby stopped laughing first; maybe her dream of having more creatures like her here was impossible... There was the radio room; she can always try and search for more.

"I mean they are not all that bad, right?" Gabby asked concernedly, hoping her dream wasn't outlandish.

"Uh well..." He tried to think, "Not all that bad... There was this ghoul once; his name was Michael. He was human, but we don't refer to ghouls as human anymore since some go crazy, but like, he once invited me for a drink when I was thirsty; that was nice... I have also seen dogs not attack me."

"What about... bigger creatures?"

"Hmmm..." He tried to think of what was the friendliest but most dangerous creature he ever found.

"There was this one time, a supermutant, who I traded ammunition with."

"Supermutants are real?"

"Oh yeah, very." Gabby was glad that they were intelligent and real; maybe there are more like her out there.

"How about other humans?" Abby asked. "Are they good like you?"

"No. I would rather deal with supermutants if I am honest; half the time it's just some crazy faction trying to kill you. Khans enslave, ****, and **** at their hearts' content. The Enclave wants to erase all of us. The Brotherhood deems you unworthy and might kill you if you look too glowy. The NCR... They take my money... I don't like that for some reason, like it's not as bad, but I don't like that."

"So... No human harem," she muttered, feeling sad... "Although Waiiiit, question, Do you know what sex is?"

"HUH?! UH, WHAT? WELL, YEAH?!" Abby had a new idea: breed Pin, get him to breed her sister too, and breed other critters; get many humans, and eventually her vault will be filled with other humans to worship her, playing the long game. Besides, she knows if Pin is a nice human, there must be another one like him out there, right? She could get her little castle inside here with Pin by her side as her king.

"Hehehehe, good." Pin felt strange to the question; he also felt aroused once more with how close they were, feeling their tails wagging and touching his backside and their little hands touching his legs. He stood up, not wanting to get more into this.

"Well, food's good. Where do I work?" The geckos felt disappointed, but having someone to give light to the vault would do great.

"Grab one of the cores, and we shall head to the lower levels together so you don't get lost. We will give you some tools; from there it's up to you. Whatever you know about electronics is more than us since we haven't taken that course yet," Gabby mentioned. "Usually I am in charge of taking care of the food around here, storage, what we learn next, and what little we need from the medbay."

"I can cook," Abby said. "I can also do other things; I fix the water, organize storage, keep the rooms tidy, and do my best every day."

"We used to have robots to help us, but the less the energy, the more they broke down; some just broke beyond our capabilities to repair as well, so we can let you do that."

"Wow, I am not that good at electronics." Gabby would pull out something out of her jumpsuit, hidden in her cleavage, a small magazine about electronics.

"Once more you are better than us, and better is all we need; let's get going." Both sisters finished their breakfast, cleaned the dishes, and helped him downstairs to do some work on the power generator to get some rooms going.

He would arrive at the place, noticing some cables have been slashed, some others cut, and the old fusion core absolutely drained and not working due to not being able to take care of it; it must be hard having to take care of the vault with just 2 people after all. Especially such a big one, you could get lost with ease in this maze.

"Why are the cables cut?"

"Oh, oh, I know that one!" Abby said, almost excited as if answering an exam. "We cut them since a lot of rooms were malfunctioning without proper energy, and since we didn't want a fire or suddenly something to blow up, we just cut it straight from the wall... Luckily we at least looked at the cables, and we know which cable goes to which room in case you want something working once you plug in one of the cores."

"Yes, we just need you to help maintain this power generator, and you can live as long as you want here and..." Gabby looked away. "We will help you with whatever other things you need assistance with." She hid her smile, but her tail was wagging like crazy. He decided to ignore what she meant by that; maybe she was just happy to have someone to fix the lights.

"Hmmm..." Pin looked at it; it was complicated if something was beyond broken, like the bots or some chips, but this was just easy-peasy electrical maintenance. He could do this with the manual and instructions that were much, much better too. "Yeah, I think... I think I can fix this, yeah!"

"You can?!"

"Yeah... Especially with these super special tools you have given me." They were normal electrical tools, but when you have to fix a blender using a dog's teeth, this is paradise. "I can do this; give me a few hours. Which room should we get running first?"

"Well... We could have the science lab up and running to give you some Radaway and also purify some of the sickness or radiation you may carry. We have some in storage, but the more the better, right?" Abby said, wanting to heal up his scars, not that she didn't like them, just wanting her new 'man' to be perfect.

"And maybe the radio too; we could transmit to other critters like us out there."

"Woah, uhhhh, people out there are crazy."

"W-well, there is... Uuuh, a special frequency that we can use to communicate with others like us."

"There are more like you in other vaults?"

"...Yes...." Abby looked at her sister, who had just blatantly lied to the human, confused as to why.

"Hmmm, I guess I could; give me a few hours once more, and I will see what I can do." He started working as Abby grabbed Gabby's hand, pulling her out of the room.

"Okay! We will be riiiight back," Abby said, acting normal, and once she turned around the corner, she dashed away with her sister. "What the hell are you doing?!" She was growling like a beast would.

"What? I just said I would like to meet others like us."

"No. No. We have humans. Let's keep humans for us. Make babies with him, then those babies grow and there are more humans, you idiot." She said with a crazed look.

"Inbreeding, a wonderful, great idea. With more of us around, the genetic pool would be cleaner; you would know this if you actually knew what to do in the science lab. Once more, I am the smart sister," Gabby smiled.

"As if! I want him! This is my chance to have some human prime meat for myself; you won't go passing him around and sharing him! I do not care; we were made for this, remember? What happened about the 'not interested in sex?'"

"Oh please, that was months ago, and with you acting like you were on buffout, he wouldn't ever like you; if anything..." She started to fiddle with her fingers. "He would take advantage of me before you." Her dream of being fucked against her 'consent' is still living rent free in her head.

"Oh, is that a challenge I hear, sister?"

"If the tail fits the suit!"

"Okay, then how about this, a little game as to who gets to fuck the human first, who takes his sweet cherry and gets to 'raise' his grades?" She was speaking in movie quotes: "First to do so becomes wife, second becomes concubine, breedstock whore to be leashed like a bitch."

"Which is a bad thing."

"Yes, a bad thing." Both girls' tails were wagging; they wanted to be fucked so dirty by the human. They extend their hands and shake, as a pact was made; now it was time for their lewd brains to start planning their next move.