Dec 19th: My Hero Academia - Sex Marathon

A homage/continuation of this series of doujins, which I have doubts will continue: https://e-hentai.org/g/2159393/480ebafac9/

It had been a long few months for Deku, having to have sex with every woman in his life. It might not sound like a problem for many, but when it comes from a slime-based villain going into their minds and controlling all of them… the enjoyment becomes a little laced with guilt.

There was no way to stop the villain that eighteen year old boy could find. They’d put a bomb inside his mind to blow as soon as he told anyone the truth, and threatened to kill the girls as well. Though he’d had a tough time finding time to tell ANYONE because of how horny the girls had become once they’d started serially fucking. Every day, every night, every lunch break, every trip to the toilet, all these times the villain had found a way to slip a girl in to drain a load of jizz from Deku’s nuts.

And the worst part for Midoriya was he had definitely enjoyed himself. More than he wanted to admit. If anything, the boy was enjoying it so much that he feared he secretly didn’t want their tryst to end. Girls just felt so hot, soft, and fun to play with. From using Ashido’s weaker acids as lube to fuck her ass with, to filling up Tsuyu’s mouth to cover her tongue in cum. From watching jizz fill up the invisible womb of Hagakure, to plugging in Jiro’s earjacks and letting her hear her own insemination. From Momo’s tits, to Ochako’s kisses, to Nejire’s ass, to Mt Lady’s big mouth, to many many more. All of Deku’s needs were so very satisfied.

And now that he’d been having daily sex his genitals had been heavily affected as well (with some assistance from the villain). His dick and balls were much larger now, to the point where his semen factories produced an unholy amount every day, meaning he almost REQUIRED the services of all his friends just to make sure he didn’t feel too much backed up pain. Even now, sitting in class watching Midnight talk about saving people in a traffic collision, his testicles churned and filled. He knew his morals were crumbling when he lost the plot of the lesson to think about which of the girls he wanted to dump his cum into.

But then, Deku saw that all the girls sat in their seats around class reacted to something all at once. A shudder ran up their bodies, their spines growing rigid as they gripped whatever part of their desks they could. Even Midnight at the front of the class was affected, showing a blush on her face and a clear set of hardening nipples through her thin suit. Was this it? Was the whole thing crumbling down around them? The boys of the class all became concerned, standing up and asking what was wrong as Midnight’s eyes locked on Deku.

“Class is over! Th-this is an unfortunate byproduct of my q-quirk!” The villain in Midnight lied, keeling over herself a little before pointing out the classroom door, “All boys return to your dorms immediately!”

There was nothing to be done, as they all shuffled out the room as quickly as possible, Deku included, and hurried back to their dormitories. Izuku was still unable to tell anyone, but for once this could be the work of an outside saviour! There was at least a confused buzz around the other males as to why they allowed Midnight to work with kids if she had a risk of harming them. Though Mineta’s theory was that the teacher was horny and made the other’s horny too…

But they still did as they were told. All sitting in their rooms and awaiting further instructions. Izuku was anxious about what was going to happen. Should he have stayed? Would that have exposed him, or made it more likely for them all to be killed?

Thankfully he didn’t have to wait long as a sound began crackling from beneath his bed. “Deku?! Deku-kun, can you hear me?!” He scrambled and quickly found a walkie talkie taped under his bed frame, probably left there as a backup using Momo’s create quirk, grabbing it and bringing it to his face.

“Hello? Ochako-san?”

“Deku! I messed up!” The crackly voice whined, “I’ve never felt anything like her! I thought I was horny, but this one has a need to breed on like a planetary scale!”

Midoriya was confused, “W-what? What are you talking about?”

“I just wanted to get you some new pro-heroes! She’s on her way, be prep-!”

Then Deku’s wall was destroyed.

Dust and rubble scattered into his room, covering the visual of whatever had attacked. Deku was coughing, trying to see through the haze, but before he could react he was grabbed by the collar and dragged off his bed.

“Found you!”

There was no reaction to be made, no way to struggle free in time, all there was was a sudden rush of air as Deku was dragged out his room and through the sky. Whoever had him was dragging him from the back of his collar, meaning he was getting somewhat choked seeing his school disappear into the distance. They weren’t flying, but leaping incredible bounds from rooftop to rooftop, travelling miles in mere seconds as he tried to get a purchase on what was happening.

Soon, Midoriya’s captor stopped leaping and halted at a random rooftop to throw Izuku down into a heap. The roof was flat, empty, and the tallest around in the immediate area for no onlookers. Deku scrambled up to see who had ripped him from school.

He’d obviously seen her before, on the news and in his hero books, but this was the first time he’d seen her beauty in person. The hero had luscious brown muscled skin yet still looking so soft in the large chest and rear she wielded. Long white hair cascading chaotically around her, with rabbit ears and a puffy tail protruding out of her… standing tall and cracking her knuckles, Rumi Usagiyama aka “Mirko”, the Number 5 hero, had found him.

“So, you’re the one my mind wants me to fuck,” She chuckled. Fierce eyes locked on him while still not losing her wide smirk at all as Deku sweated profusely, “Ryuuko said she wanted to meet, then vommed some shit in my ear. Now I hear something talking to me that wasn’t there before. That’s some quirk, kid. Glad I dragged you away from that school before you got to anyone else!”

With her titanic legs, the woman began walking towards him.

Mirko had a resistance? Maybe this was really the end! “I-it’s not me!” Deku protested, “I… I-”

“Like I’d believe that shit!” She laughed, grabbing Midoriya by the collar again with ease, “Like someone else is gonna want me to fuck you? Get real. Now get ready for your-!”

The bunny hero paused completely. Deku could see the squirming mass of the slime villain still in her ear, seemingly fighting with all its power before entering all the way in. The whites of Mirko’s eyes quickly taking over until white was all there was.

“Deku!” The voice was Rumi’s, but it was obvious that the slime was piloting the ship again… but perhaps not for long. There was a fight on the hero’s face, like neither was fully in control, “You have to beat her! We can do it together, okay!?”

Izuku had sort of hoped the slime would threaten him.

This was close to being over, yet the morality in his heart had crumbled so much recently that he really didn’t want it to end either. And he REALLY wanted to fuck Mirko. If there was a threat he could at least pretend he was still a hero in his heart, but no, the future was right here in front of him. Either let Mirko kick his ass and stop the madness, or help the slime and fall into more hedonistic pleasures.

He hadn’t got to have sex today, and seeing Mirko so close was growing his dick something powerful. He wanted to stop noticing, but her paused like this was showcasing all her best assets. The subtle shifts on her body as she breathed, the calm lines in her face as she blankly stared, and how soft she felt even while grabbing him.

“Why can’t you control her…?” Deku asked out of genuine curiosity, but knowing it was already a showing of his stance on the matter already.

“She’s too horny!” Mirko exclaimed, “Her bunny quirk has a libido through the roof! It’s burning through my powers before I get a chance to take complete control! If you c-can’t s-satiate her, then there will be nothing left OF me and she’ll ta-k-k-k-ke you to jaaaaaail! Gahhhhh!!!”

There almost looked like a heated fizzle of steam from Mirko’s ear as her eyes returned to her own. The wide smirk returning to her face as she regained control. “Whew! Good try! Let’s get on with it then shall we? Erect yourself already! I need to get laid!”

Deku was so confused, especially when he was dropped onto a nearby mattress that was apparently a part of the roof. “W-what?!” Was this part of the slime's power?

“Thing I love bout mind controllers, they always think they can keep up,” She smirked, roughly stepping his balls through his trousers, “You’re the only quirk users I get to fuck into comas without looking like a freak! I just get to blame it on your ‘powerful quirk’, haha! So you n me are gonna fuck till you’re either dead or wishing for it!”

“Y-you could go get help!” Deku suggested, hoping her own sense would beat his dropping morals.

“Nah, I work alone.”

Was this how the hero business worked, or was the slime affecting her perceptions? Deku lost both trains of thought as Mirko ripped her costume in one smooth motion. The front part of her one piece completely tattered as her breasts and pussy fell into view, both bouncing beautifully and leaking liberally respectively. His dick hardened immediately at the sight of the pro hero exposing herself for him. Her foot still resting on his junk, she seemed to grin even wider in confirmation, “Good.” She sneered, ripping his trousers from his body with just her toes. Exposing the boy to the elements as his dick sprung into view below him. “Very good! Maybe you could last 10 minutes with something like that!”

It was crazy, maddening, but right now Mirko was straddling the lying down Izuku and looming over him with her sexy tight body. Every twitch of his dick making his morals fall even lower as the amazing Rumi lined him up with her gushing cunt. The voice of the slime entered his brain, "Alright, Deku! All your training has been for this, apparently! Let’s fuck this bunny!”

–18 Hours later–

“NNNGGGGG! H-HOLD ON DEKKKUUUU!!”

Ask her a day ago, and Mirko would laugh to be told she’d be reduced to lying on her back begging for less sex. The one problem she’d had for the majority of her life was the lack of satisfaction she felt when fucking another. Sure, other heroes could fuck hard but she could never find someone with the stamina needed to actually last the whole 12 rounds she wanted. Often needing to use tools or a 2nd/3rd partner to get anywhere with her quirk’s libido.

Even though it was dark and hard to see, the crusted cum that covered her body seemed to suggest that Rumi was losing.

Currently Deku was fucking her missionary style, one of her least favourite positions but they’d used every other one during their marathon that she couldn’t argue with it. His hands squeezed her cum covered tits, his cock slammed against her cream painted cervix, and his inhuman groan suggested her plea didn’t reach him. There was just the animal left, and she finally realised the type of partner she’d probably seemed to others.

His dick was just so compatible with her body. It was like they were built for each other, the one part that she’d been missing from inside her all this time. Even while the marathon continued and her body ached in tiredness, she felt her pussy’s aching call begging the rest of her to never stop. The libido still controlled Rumi’s body as another blast of cum filled up her full rectum. Melting at the hot feeling spreading once again, her nerves were just shot bundles of pleasure firing on all cylinders with no idea what was happening anymore. Deku actually removed himself from her asshole to blast the latest thick creamy load into her pectorals, as if showing how manly he was for dominating her strength as well. It made her pussy quiver with delight as she felt the warm white jism spread over her belly. How he was shooting such thick yoghurt still felt impossible to Mirko, yet here he was making her even stickier.

Obviously, the slime had something to do with it. Using it’s control over Deku’s brain to increase his pheromone and libido to match those of the bunny, and letting his own eagerness do the rest. One probably couldn’t argue that Deku was a villain now, looking almost Nomu-like as turned where he stood over the dark skinned woman, grabbed her tail, then brought her rear up to him to fuck her pussy while her legs splayed out on either side. Using the hero as a proper onahole built for his pleasure. The slime villain could have taken Mirko hours ago, and the points on her brain were certainly there to take over once Deku finally finished, but for now it was just fascinating to see how far he’d go.

Mirko had been one of Deku’s crushes. The first woman he’d jerked off to. There was something just so erotic about seeing her be so covered in his cum. So full of his seed that he might get to see the loner woman pregnant with his child. It drove him to keep humping, to keep fucking that bunny pussy like his life depended on it.

It wasn’t long before his cum filled the woman once more, cascading out her cum drunk hole to splash over her face, open mouth, and hair once more. Hearing Mirko moan as his jizz covered her body. The dawning sun let him see how much she’d fallen to his dick.

He tried to figure out where he was, what time it was, but before he could Mirko dragged him to the mattress. Smearing him with his own juices as his body finally began to run out of steam.

“You did amazing,” smiled the bunny. Deku already wasn’t sure if it was her or the other one, “You’ve saved your friends and your sex life. And trust me, we’ll definitely be doing that more often now. Ya hear?”

Sleep overtook him, but Midoriya’s guilt somewhat wavered as he dreamt of getting to plunge into Mirko’s tight bunny hole again tomorrow…