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Chapter 6
by
Goken
What's next?
Getting a new sister.
Heather maintains a balanced demeanor, administering discipline to her children based on their misbehavior. This allows Tommy to easily sway her emotions. In contrast, Jessica possesses an exceptional level of tolerance, qnd Master PC struggles to fine-tune the profiles.
"What do you mean.....I can't manipulate Jessica's personality like I did with my mother?" I asked with frustration and Ram responded, "Your sister's inhibition and hatred levels are astonishingly high."
Rom chuckled as she elaborated on the situation, "Even if you bring her inhibition and hatred down to zero, she still has thirty-five points to resist any influence."
"If that's the case, can't we just lower Jessica's emotions to a negative level?" I inquired, and Rom flashed a mischievous grin as she replied, "Clever thinking, but there's a catch. It could harm your sister's soul."
"W-wait a second. Do people really have souls?" I asked, my expression one of disbelief and Rom replied, "Of course, silly. Without a soul, no one can truly be unique." She giggled while adding, "And I wouldn't recommend damaging the soul unless it's absolutely necessary."
"Hey, you mentioned that Master PC is capable of anything." I grumbled, and Rom responded with an analogy, "Master PC can reshape your sister's soul. But consider it this way: swapping out an engine in a car doesn't make it the original, does it?"
"You raise a good point, but I wanted the slut to be on her knees, catering to my every whim." I frowned in disappointment, but then a sadistic thought crossed my mind, "Ummm... if I were to take my sister's soul away, wouldn't her body just follow my commands?"
"That's quite clever, Tommy. Without a soul, the body will comply with anything you request," Rom clarified, but Ram cautioned, "I won't prevent you from using Master PC, but I must warn you of the repercussions. Your sister's soul will decay over time unless you find it a new vessel."
My mother's chihuahua whined for attention, and I couldn't help but grin mischievously at the thought.
"Is it possible to temporarily merge my sister's soul with Lucy's? Once I'm done having my fun, return my sister's soul to her body?" I inquired eagerly, and Rom replied, "You can do that, but her personality will blend with Lucy's. In other words, keep your new pet away from other dogs. Especially males."
"Don't worry, I've got a solid cage for that bitch."
Jessica had just stepped out of the shower, a towel wrapped around her chest, and I walked into her bed room without knocking.
"What are you up to?" I asked gleefully, and Jessica hurled a book at me while shouting, "Get the hell out of my room!!!"
I evade the attack, a sadistic smirk playing on my lips as I say, "I know we never see eye to eye, but I have the perfect solution for us."
"Good luck trying to convince me to be nicer," Jessica replies with a humorous chuckle, and I telepathically signal Rom to activate the settings on the Master PC.
I flash a grin at Jessica, her lifeless gaze fixed ahead, and I slap her face to ensure there's no resistance. With a swift motion, I remove the towel, eager to explore Jessica's enticing body, and I harshly squeeze her breasts, yet she shows no sign of flinching at my advances.
"How do you enjoy being my mindless ****?" I smirk at her unresponsive face while my fingers slide into her wet tunnel, "Whoa... even without a soul, your body responds perfectly."
"Come with me to the living room, slut," I command, and Jessica's body obediently follows, like a puppet on strings.
I guide her towards the couch and quickly thrust my member into her dripping tunnel, while the real Jessica barks frantically from within her cage.
"Shut the fuck up, bitch!!!" I shout, then laugh at how fitting the comparison is, likening my sister to a female dog.
I penetrate Jessica's body without a hint of remorse, yet she continues to bark.
"I'm trying to enjoy myself!!!" I yell again, but it only fuels her aggression and I threatens, "If you don't behave like a good bitch, I'll toss you outside."
As I stared at the cage, I caught sight of Jessica eagerly wagging her tail. It seems that merging two souls intertwines intellect with the primal urge to mate. The only question that lingers is, who truly holds the reins?
"Would you like to step outside and create some puppies?" I provocatively inquired, and Jessica responded with a joyful sniff at my suggestion.
"Well, that clears up the enigma," I smirked at their antics, though I wouldn't actually let her out due to safety concerns.
I utilized Master PC to ensure that no one would realize we were missing from school or what we had done in public. I indulged in Jessica's body in every conceivable location—at the park, in the cinema, and even in a secluded alley. It was thrilling for a time, but it became tiresome to command her for every little action. Plus, the absence of genuine emotions left me unfulfilled.
After pondering for a few moments, I reached a conclusion. I could implant another soul into Jessica's body, but there was no one to turn to except Sarah. After all, we were both navigating similar family troubles. She endured an abusive father, and her mother hesitated to offer help. Her brother had made several attempts to **** her. In terms of looks, she was slightly overweight with freckles, yet incredibly bright. But once she inhabited Jessica's body, appearance would be irrelevant. Regrettably, Rom and Ram wouldn't reveal the results of my choice for another three days. To play it safe, I instructed Master PC to ensure she couldn't disclose anything about the software or use it against me.
I dialed Sarah's number and said, "Hey, there's something important I need to show you. Can you come over?"
"I must prepare for a significant examination, Tommy."
Sarah exhales in frustration at my insistence and ultimately agrees to my request, "Very well, but you had better not drag me into one of your absurd pranks."
A few hours later, Sarah arrives and knocks on the front door.
"I apologize for asking you to come over on such short notice," I remarked while stepping aside to allow her entry, to which Sarah replied, "No need to worry, Tommy." She chuckled, "Moreover, it provides me with a reason to escape from home."
I guide Sarah to Jessica's room and state, "I have transformed my sister into a mindless servant."
Sarah stares at Jessica for a brief moment and then responds, "Ummm....there's nothing out of the ordinary about her."

"Oh, right, I kept everyone in the dark about my sister's situation." I chuckle, and through telepathy, I guide Rom to make Sarah aware of the changes.
"W-what the heck," Sarah whispered, her eyes narrowing as she scrutinized Jessica's lack of response. "How is this even happening?"
I took a few moments to elaborate on Master PC and the alterations I've made thus far.
"Seriously, you merged your sister's soul with Lucy?" Sarah burst into a fit of delirious laughter at Jessica's predicament before asking, "So.....you've grown tired of having a mindless bimbo and want me to take over her body?"
"I wouldn't have summoned you here if I wasn't sure about it," I declared, and Sarah paused to think before responding, "Your sister is the hottest slut in school, and I wouldn't mind switching bodies. However, we can't just leave my body unattended and let it starve."
"I've already mapped everything out," I replied, then confidently explained, "I'll utilize Master PC to erase my sister's memories and transfer yours into her. Once that's done, I'll convince Jessica that she's you. After the body swap, I'll restore my sister's memories to you."
"That's quite clever," Sarah acknowledged, but then she added, "I have a few stipulations before we swap our bodies. I want to live my life without you manipulating the software to alter me." She giggled, "Don't worry, you can still impregnate your sister with twins or triplets, but make sure to release an extra ova for my own pleasure."
"B-but...why?" I stammer, and Sarah responds, "I'm quite adventurous when it comes to intimacy, and I sometimes hit the clubs to unwind. Plus, I find it thrilling to use your sister's body for casual encounters, not knowing whose essence might bring new life to her eggs.
"You swear you won't do anything too wild with my sister's body?" I inquired cautiously, and Sarah rolled her eyes, replying, "We've been friends since elementary school, and you still doubt me?"
"Alright," I conceded, swapping their souls along with their memories. Once I was done, I utilized Master PC to transport Jessica to her new abode.
As Jessica's memories surged into Sarah's consciousness, she remarked, "I understand why your sister harbors such deep resentment. You use her underwear for your own pleasure."
"Ummm...I was merely curious about the material." I turned away, feeling embarrassed, and Sarah gently reassured me, "Chill, Tommy, I won't judge you." She giggled, adding, "In fact, go ahead and finish on all your sister's panties, and I'll make use of them in class."
"Are you for real?" I exclaimed, excitement bubbling within me, and Sarah playfully purred, "I'll do anything that excites you...baby. But only if you grant me one tiny favor."
"What do you have in mind?" I asked, and Sarah smirked, saying, "You mentioned earlier that there's a way to reverse the pregnancies, and I was curious..."
I quickly grasped the implication and countered, "No way, that's far too risky."
Sarah teasingly traced her fingers along my chest, saying, "Please, just this once. I promise to be a good sister afterward."
"Fine...but I'm reversing the pregnancies in three months." I agreed to her request, then laid down my own condition, "However, you're not allowed to get a tattoo or use any **** without my consent."
"Deal," Sarah replied without a moment's hesitation, then joyfully embraced me, "It's going to be incredible playing matchmaker with your sister's **** eggs."
Sarah slides two fingers into Jessica's depths and teases, "Wow, you're incredibly sensitive," With a mischievous look in the mirror, she adds, "Don't fret, I'll make sure your body is used the right way."
"Are you interested in having some fun with your sister in the shower?" Sarah inquired, and I nodded in agreement as she took my wrist, guiding me forward, "Are you ready to indulge in her eager warmth?"
Noticing the house's unusual silence, Sarah questioned, "By the way, Tommy. Where's your mother?"
"I sent her off to work at a strip club," I chuckled lightly, and Sarah advised, "I hope you've taken precautions unless you want to see your mother in pain."
"No need to worry, I've already used Master PC to ensure my mother is immune to diseases and to limit her ovulation," I explained, then added, "But I haven't taken any precautions with Jessica's body."
"Let's keep your sister's body untouched for a bit longer," Sarah winked and than frantically squeezing my cock into Jessica's tunnel, "This is incredibly thrilling. You're actually making love to your own sister." She giggled, "So... does it still count as **** if I'm using her body?"
"That's a good question," I pondered, increasing my rhythm.
My cock pulsates within Jessica's womb as I exclaim, "Wow... this is so much better than being with a mindless bimbo, Sarah."
Sarah looked back at me and said, "From now on, I'm your sister, baby. So... call me Jessica."
"Of course, Jessica," I replied, feeling an unexpected surge of arousal. Perhaps it was the thrill of wanting something unattainable, with someone helping me reach it.
As Sarah turned on the shower, she urged me to join her. Soon, our lips met passionately as the water cascaded over our bodies.
Looking deep into my eyes, Sarah asked, "Bro, is there anything I can do to spice up your life a bit?"
I held her tightly as I replied, "Everything I need is right here."
Sarah flashed a grin at my words, savoring the moment, "I have a little secret to share, bro. I've always dreamed of having a big family." She giggled, "How do you feel about helping me fertilize the stupid ova?"
"I don't mind, Jessica," I replied, amused by her playful mimicry of my sister.
"Do you care if I sleep with random strangers?" Sarah asked, her grin widening as she teased my hesitation, purring, "After all, I'm a total slut."
"Well, I did say you could live your life freely, but please, don't do anything reckless," I cautioned, and Sarah smiled back, reassuring me, "Don't worry, bro. I won't go too far." She giggled, "But keep the pregnancies a secret from mom. Otherwise, she'll freak out and **** me get an abortion."
Sarah's eyes drifted to my throbbing member as she said, "I have an idea to make this day even more memorable, but you have to indulge in a little role-play with me."
"Ummm... what kind of role-play?" I asked eagerly, and she replied, "Let's pretend our main goal is to fertilize every ova to create your offspring. We’ll disregard any consequences and let the pregnancies unfold." She giggled, "Whatever happens is fair game."
I quickly thrust into her, deep within her womb, and said, "You're quite the reckless slut, Jessica."
Sarah entwines her legs around me, whispering, "Ugh...your cock feels so incredibly good inside my warm, juicy cunt." She leans in closer, her breath hot against my ear, encouraging me, "Cum inside whenever you feel the urge and fertilize those stupid ova." She giggles, "Can you picture how big my belly will get when the pregnancy reach third terms?"
The interactive clouded my judgment and inquired, "Hypothetically, if I didn’t use Master PC to reverse the pregnancies, would you continue with the development?"
With a sly smirk, Sarah responds, "Honestly, bro, I don’t care what happens to my body. But you need to find me a new vessel."
My cock erupts violently within her birth canal as I exclaim, "God damn....you are wild, Jessica."
"I wasn’t lying about it, though," Sarah winks, then teasingly purrs, "I know you mentioned earlier that we could keep the pregnancies to three months, but could you stretch it to five months?"
I was about to check the failure rate on the monitor, but Sarah playfully blocked my way, saying, "For once, be spontaneous."
"Alright, five months, but nothing beyond that," I replied, and Sarah beamed at me, saying, "Besides, Master PC can make your sister's body adapt. So....waiting five months shouldn’t be an issue."
Sarah digs into her purse, pulling out a pack of cigarettes, and softly chuckles, "I completely forgot, you don’t want me using ****."
"You can indulge in cigarettes or marijuana. Just steer clear of anything that might irreversibly damage Jessica's brain cells," I remarked, though I kept to myself the thought of reclaiming my sister's soul once this ordeal concluded.
A few months later, I found myself staring at Jessica's body and said, "Ummm.... is it too much to ask for you to skip a day without overindulging?"

"I apologize if your sister's look is a bit unconventional, but I have quite the appetite," Sarah remarked, prompting me to clarify, "Are you suggesting you have an eating disorder?"
Sarah gracefully rose from the bed, striking a seductive pose as she declared, "Just face it, Tommy. The size of the twins turned out beautifully." With a playful giggle, she added, "Besides, I feel at ease with my weight, almost... as if I'm truly embracing my original form. And once you activate the embryos for development, your sister's body will inevitably gain some heft."
"I must admit, the added curves are appealing," I conceded, but then I countered, "You can indulge in whatever you desire. However, if it starts to become unhealthy, I will resort to Master PC to trim down some of the weight."
Sarah turned to give me an enticing view of Jessica's bubble butt and said, "These curves are completely natural, Tommy. Are you really sure it's necessary to revert your sister's body to its original state?" With a giggle, she continued, "I could easily enhance your sister's breasts to be twice their size and make her backside much fuller."
"Well, I guess we can maintain things as they are for a bit longer," I replied, and Sarah joyfully settled onto my lap, saying, "Thank you, Tommy. I’ve been eager to utilize her body to its fullest potential." With a giggle, she added, "And believe me, your sister remains captivating, no matter how much weight I add."
Sarah had her motives for swaying Jessica's weight. She is guiding Jessica's body to adapt to different scenario, and if all goes according to plan, the pregnancy has a higher likelihood of flourishing.
Additionally, Sarah holds one of Jessica's ova for her own pleasure and wishes for it to be fertilized by someone Jessica despite most. Naturally, Sarah struggles with determining how many embryos that single ova could potentially produce. Ultimately, she resolved to allow the ovum to randomly choose the number, regardless of whether the result might be perilous.
I can't help but chuckle at her fierce determination as I propose, "How about we strike a deal? You can make Jessica gain as much weight as you want over the next five months. But there's a catch—she needs to be three times her current weight. If you fail to achieve this by the deadline, I will reverse the weight gain, and you won't have a leg to stand on to complain afterward."
Sarah's eyes widen in surprise at my bold offer, and she asks, "Are you really serious about this?"
"Absolutely, I'm serious," I confirm, but I remind her of the stipulation, "Just remember, you have to get it done within five months, or the deal is off the table."
"Are there any rules to follow?" Sarah asks with a mischievous glint in her eye, and I reply, "Nope, you can use any method you desire."
"Hmmm... and what do I get if I win?" Sarah inquires eagerly, and I respond, "If you succeed, I'll use Master PC to ensure the weight gain is permanent."
"You've got yourself a deal," Sarah agrees enthusiastically, but then she adds, "Can I add even more weight after I win?"
"If you manage to win, you can make Jessica as obese as you want," I reply, and Sarah's wicked grin spreads as she says, "This sounds like an incredible challenge to me."
"Five months might not be enough time, though," Sarah muses softly, then curiously ponders, "Tommy mentioned there are no rules. Hmmm... there must be some kind of supplement to slow down metabolism." She scrutinizes Jessica's body with a grimace, declaring, "I'll find a way to win, one way or another." She giggles, "Jessica, remember when you called me a fat land whale at school? Well, I have the perfect punishment in mind."
"How can I trust that you'll uphold your part of the bargain, Tommy?" Sarah sought reassurance, and as I typed a few commands on the Master PC, I explained, "Once you complete the challenge, the software will automatically make it permanent."
"Could you grant me access to Jessica's weight limit?" Sarah inquired, and I eyed her with suspicion as I replied, "I could, but there's a chance you might exploit it to cheat."
"Oh come on, just give me access after I win," Sarah playfully insisted, and I responded, "Alright, but keep in mind that if you overload Jessica's body, it can't be reversed."
I studied her mischievous grin and remarked, "You’re not going to listen to my warning, are you?"
"Not a chance," Sarah beamed with excitement and then asked, "Are you concerned about what I might do to your sister's body?"
"I wouldn’t have presented you with this challenge if I were worried," I replied, though I kept to myself the fact that there was a way to alter the permanent settings. If I was mistaken, Jessica's body would be at Sarah's whim.
"Hypothetically, if I were to give you access to the weight limit, how heavy do you intend to make Jessica?" I asked, curiosity piqued, and Sarah replied, "Promise you won’t be mad, and I’ll share my plan."
"Alright, I promise I won’t be upset," I assured her, and Sarah laid out her intentions, "I want to make that slut gain at least ten pounds every day."
"So, you’re aiming to turn Jessica into the heaviest slut in school?" I asked, maintaining my composure, and she said, "I know you’ll despise me for it, but I have my reasons."
"What if we bypass the challenge and just lift the limitation?" I suggested, and Sarah's face lit up with joy as she exclaimed, "Oh my god. Really?"
"However, if you fail to keep me satisfied in bed, I’ll reinstate the weight limit. Do we have a deal?" I stated, and Sarah quickly asked, "Can I make Jessica's body incredibly heavy?"
"To be honest, my sister doesn't really matter to me," I chuckled hysterically, adding, "You're essentially punishing Jessica on my behalf. But if there are any health concerns from her gaining too much weight, I'm using Master PC to shed a few pounds. Deal?" I proposed, and Sarah responded with a cheerful, "You've got yourself a deal, bro."
"Ummm...Tommy, what's the weight limit?" Sarah inquired, and I glanced at the monitor before answering, "Master PC indicates there’s no weight limit. However, it does recommend we avoid going overboard for safety reasons."
With a sadistic grin, Sarah asked, "Would it be okay with you if I doubled the weight every day?" She accentuated Jessica's chest to give me a tantalizing view of her cleavage, trying to persuade me, "These beauties will definitely appreciate the enhancement."
"I already told you that making Jessica gain too much weight is unhealthy," I countered, but I eventually succumbed to her persistent requests, "Alright, but only on one condition. You can't be promiscuous like a slut."
Sarah pouted, saying, "That’s so unfair." She sighed in resignation, adding, "Fine...but calling it obesity will be an understatement by the time I’m done with your sister." She giggled, "And you won’t even need to get her pregnant to see a big belly."
Sarah playfully tapped my head, saying, "I can’t believe you think I’d misuse this body like that. After all, I’m the one who has to bear the consequences."
I smirked at her remark and replied, "Just admit it, Sarah. You thought I was okay with the weight."
Raising an eyebrow, Sarah said, "No, I didn’t, but I did enjoy the role play." She glanced at Jessica’s figure and confessed, "You’re right, though. I really need to cut back on the sweets."
"You're perfect just as you are, Sarah," I remarked, then added, "Besides, I've already given you the green light to adjust the weight."
"You're as sweet as candy," Sarah giggled, contemplating, "You know what, Tommy? Let's have this body gain weight naturally."
"That works for me," I responded, but recalled her previous comment, "You mentioned earlier that Jessica's stomach could look pregnant just from gaining weight. Is that really possible?"
"Absolutely, if she gathers enough flabby tissue," Sarah clarified, pulling off her clothing to reveal Jessica's rounded abdomen.
"Be truthful, do you want to?" Sarah playfully inquired.
"Well... I'm a bit curious," I murmured softly, and Sarah laughed, saying, "I knew it, you do want your sister's body to be heavier."
"Hey, you tricked me!" I exclaimed, shooting her a glare, and Sarah chuckled, saying, "Relax, if you're genuinely interested in having a little fun with your sister's body. We can always revert it back later." She adjusted Jessica's body and then announced, "I've set Jessica's stomach to gain weight easily, and none of her clothes will fit next week." She giggled, "If you ask me, gaining weight is preferable to an excessive pregnancy."
"Might as well take on the challenge," I laughed, and Sarah replied, "I don't feel right about this unless we both consent."
"You have my consent," I said, and Sarah smiled, responding, "I guess we can turn the role-play into reality."
"Your sister's belly is filling out beautifully," Sarah remarked, examining the shape. "At this rate, your sister will be a landwhale in just three months."
"But the challenge was supposed to last five months," I joked playfully, and Sarah smirked, replying, "That's what I adore about you, Tommy. You never take things too seriously." With a giggle, she added, "How about we disable your sister's metabolism and see who gives in first to use Master PC?"
"Absolutely, let's see who breaks first," I said, playfully pushing her onto the bed. "You're right; having bigger breasts is definitely fun to play with."
"By tomorrow morning, it'll be twice larger," Sarah winked at me teasingly before asking, "So... where are you thinking of taking me on our first date?"
"Well... the weather is lovely outside. How about the beach?" I suggested, and Sarah beamed, saying, "Great choice, Tommy. I picked up a swimsuit for slutty sister earlier, and I can't wait to show it off."
"Why not put it on now?"
"Just wait until we get to the beach," Sarah winked at me playfully.
We gathered our things and made our way to the beach. While I was busy looking for the perfect spot, Sarah went to change.
Moments later, Sarah reappeared, her eyes filled with desire as she eagerly squeezed Jessica's breasts. Despite her chain smoking like a chimney, it wasn't merely the habit that captivated her; it was the thrill of controlling Jessica's body for such forbidden pleasures that was truly alluring. Naturally, this is merely a prelude, and the main course is yet to be served.
"How does your slutty sister look in the swimsuit?"
My eyes widen as I respond, "Damn, she looks incredibly hot in that outfit."
"I told you, your sister still remains sexy even after gaining a few pounds," Sarah said, leaning in closer to whisper, "Would you prefer her body to be a little fuller, or should I take charge of this?"
"Well... it would be incredible if Jessica had larger breasts," I responded, and Sarah laughed softly, saying, "I agree, bigger breasts would amplify Jessica's charm, but every other part of her body is mine to play with. Does that sound appealing to you?"
I considered her suggestions for a moment before replying, "Alright... but we need to restore Jessica's body to its original form after five months."

"How can you possibly walk around with something so heavy?" I asked with astonishment as Jessica's breasts expanded like a balloon.
"The burden certainly places a significant strain on Jessica's back. Hopefully, a couple of days will compel her body to adapt," Sarah chuckled, then playfully suggested, "What do you say to a little sneak peek?"
"This isn't a nude beach, Sarah," I warned her about the consequences of public indecency.
"Fine," Sarah said with disappointment and than asks, "Are you certain I can do anything I want during those five months?"
I nodded while responding, "As I mentioned before, you can turn the role-play into reality. So... feel free to do whatever you wish with Jessica's body."
"That's fantastic, but could you do me one last favor?" Sarah asked with a mischievous grin, and I replied with a hint of suspicion, "What kind of favor are we talking about?"
"I want to play cupid with one of Jessica's ova," Sarah requested, and I said, "Be honest with me—why do you dislike my sister so much? If you tell me, I'll consider your requests."
"Well..... during a crucial math exam, your sister swapped my answer sheets with hers, leading me to retake the whole semester. On multiple occasions, she knocked my lunch off the table while I was eating and called me a landwhale," Sarah replied, lowering her head in frustration. "I could list everything she did, but it would take all day."
"So, you were seeking ****?" I inquired, and Sarah sniffled frantically as she responded, "When you mentioned I could take over Jessica's body, I felt a surge of happiness because I could finally make your sister suffer."
"Yeah, everyone at school despises my sister," I confessed, but then countered, "Still, you're practically Jessica right now. Anything you do with her body will ultimately harm yourself."
"I intended to ruin Jessica's reputation. After that, I would return to my original body," Sarah outlined her plan, and I said, "I can't let you tarnish my sister's body. However, everything else is fair game." I sensed her disappointment and proposed, "How about this: you can mess with Jessica's life, but it can't be too ****. Deal?"
"Deal," Sarah replied eagerly, "I'm going to have a blast with your sister's body."
I noticed Sarah's sorrowful expression and asked, "What's bothering you?"
"It's unfortunate that the weight I impose on your sister will reset after five months," Sarah lamented, and I smirked, suggesting, "What if we set a fifty-fifty chance that it becomes permanent after five months?"
"Really?" Sarah asked quickly, and I replied sarcastically, "I'm sure you'll take excellent care of Jessica's body."
Sarah affectionately hugged me, saying, "Don't worry, Tommy. I'll ensure your sister stays attractive, no matter the weight." She giggled, "A fifty-fifty chance isn't too shabby. I just wish it were more in my favor, though."
"I'll sweeten the deal with an additional twenty percent if you let me take your mother as my personal plaything," I proposed, and Sarah let out a sigh, replying, "I'm sorry, but I have to pass."
"You have five months to reconsider," I remarked, then tried to entice her further, "Honestly, a seventy percent chance is quite the enticing offer."
Sarah took a moment to reflect before responding, "Give me a few days to mull it over. But if I do agree, I want eighty percent of the activation."
I flashed a grin at Sarah and made a tempting counter, "Include your little sister in my personal collection, and you can toy with Jessica's ova. Fertilize it all if you wish, but you must ensure an abortion after three months."
Sarah shot me a fierce look, saying, "Oh come on, that's a lopsided deal. Two lives for one insignificant slut?"
I chuckled at her evident struggle with the temptation, saying, "I can see you're flustered by the proposition, Sarah. I mean... if I were in your position and craved ****, I might regret passing up such an opportunity."
"If I take the offer, I'm going to wreak your sister's body," Sarah threatened, and I replied, "Be my guest, but deep down, I know you care too much for your little sister to go through with it."
It's true that Sarah loathed her family, yet her younger sister was the one she held dear. Tommy was well aware of this and exploited Sarah's vulnerability to his advantage.
"That's enough, Tommy!!" Sarah spat, then began to threaten, "I'm going to ****-feed your sister so much junk food. You better pray it doesn't become a permanent issue."
I wrapped my arms around her hips and said with a teasing tone, "Relax Sarah, you can still get your **** on Jessica. But first, we need to delve deeper into the software before we do anything reckless."
Sarah grimaced, contemplating the possibilities, and asked, "So....you mean, once we understand everything about Master PC, I can do anything unethical to your sister?"
"Let’s take it step by step," I replied, and Sarah giggled as she pondered, "Hmmm....can we kick things off by widening the pelvis?"
"It’s wide enough already," I countered, but then I sighed at her playful expression, "Alright, you can make it wider."
"Thanks," Sarah said, leaning over to showcase Jessica's ample rear, "Isn’t this lovely, Tommy? You’ve got something to hold on to." She giggled, "Just make sure to split your sister's butt wide open, babyyyy."
With a mischievous grin, Sarah entertained the thought of mistreating Jessica's body and asked, "You mentioned earlier that the challenge was to make Jessica three times heavier. Can we use Master PC to make the slut gain weight faster?"
"We can give it a shot," I replied casually, and Sarah’s grin widened as she said, "That’s all I’m asking."
I telepathically instructed Rom to increase Jessica's weight, and the swimsuit stretched until the fabric could no longer provide support.
"Damn, that was fast," Sarah laughed deliriously, but then she suddenly lost her balance, "I’m not used to this much weight."
Sarah smirked in my direction and asked, "Is the weight acceptable?"
"I must confess, Jessica's curves are quite alluring. Yet, the rest of her physique feels a bit too much for my liking." I responded, and Sarah took a moment to scrutinize Jessica's form before remarking, "Oh come on, Tommy. The proportions balance out beautifully, except for the midsection." A giggle escaped her lips, "She looks like she might be expecting."
Sarah softly whispers in my ear, "Is there any chance you could activate the permanent settings?"
"I guess so," I sighed, feeling the weight of Sarah's unwavering resolve.
I realize that the permanent settings only have a fifty-fifty chance of succeeding. Yet, if it does activate, Sarah will undoubtedly voice her complaints, and I’ll be subjected to her relentless nagging. So... I crafted a plan to keep her content for a while. I telepathically instructed Rom to activate the setting, making it appear permanent. Of course, there’s still a possibility it might actually be permanent, but we won’t uncover the truth until next month.
"I don’t feel any changes," Sarah grumbled.
"The scale on Jessica’s profile has been disabled. There’s no way to reduce her weight. I’m confident it’s permanent unless Master PC made an error," I clarified, though it wasn’t entirely untrue either.
"That’s not very reassuring. How can we be certain it’s permanent?" Sarah questioned, her skepticism clear, and I replied, "I’ve never seen Master PC make a mistake. Plus, if the weight scale is turned off, it simply indicates that certain features of Jessica’s profile are no longer accessible."
"I can't believe it turned out permanent," Sarah laughed frantically at the outcome, "Jessica the heaviest girl in school!!!"
"I doubt there’s anyone heavier," I reassured, but there’s something unsettling about her expression.
"I still don’t trust that it turned out permanent," Sarah said, but then recalled the settings should allow her to manually increase Jessica’s weight, "But there’s one way to find out."
Sarah envisioned Jessica’s body gaining more weight, and when the ordeal concluded, she exclaimed with excitement, "Holy crap, it did turn out permanent!!!"
"Ah crap, maybe it did turn out permanent," I softly muttered, feeling nervous.
"When we swap back our bodies, your sister will definitely freak out about the weight," Sarah laughed deliriously, and I said with a concerned tone, "I’m sure you’re enjoying yourself, but be cautious. Because you can only add weight, not remove it."
"So, are you satisfied your ****?" I inquired, watching as Sarah's lips curled into a sadistic smile. "Not quite there yet," she replied, her eyes glinting with mischief.
Sarah's gaze drifted to the shredded fabric strewn across the beach. "I doubt there's a swimsuit that could accommodate your sister," she mused, a giggle escaping her lips. "Or any clothing for that matter."
"Strolling around naked will attract unwanted attention," I sighed, shaking my head at her recklessness. "Just wait here; I think mom left her old dress somewhere in the car."
"Even with the extra weight, there are no stretch marks," Sarah remarked, scrutinizing Jessica's figure. Then, with a thoughtful expression, she added, "Hmmm... perhaps I should enhance things while Tommy is busy searching for a dress?"
A female jogger approach and Sarah called out, "Excuse me... could I get your honest opinion? How do you find my appearance?"
"Your features are quite lovely, but you might look even better with a bit less weight," the female jogger replied candidly and Sarah giggles while saying, "Some say it's unhealthy and unattractive, but I take pride in my appearance. Would you have encouraged me to gain more if it brought me joy?"
"I guess... no one should discourage you from pursuing happiness," the female said, and Sarah's smile turned mischievous as she replied, "Thanks for your honesty, but I'm uncertain. What do you suggest?"
"Go with whatever makes you comfortable," the female jogger advised, and Sarah give a wicked grin as she said, "These conversations boost my confidence," teasingly tracing her fingers along his chest. "But you still haven't told me how much weight is ideal."
"Honestly, you shouldn't weigh more than you do now," the jogger cautioned, but sensing her indifference she added, "I don't want to be responsible for a direct answer. But if you're set on gainingweight, I suggest doubling your current weight. If that doesn't satisfy you, keep going until you find what you desire."
The female jogger checks her watch and remarks, "The size of your breasts are perfect. Before leaving, I wanted to offer you one last piece of advice. Ensure you live without regrets."
As the jogger faded into the distance, Sarah intentionally increased Jessica's weight. Once done, she stared at her reflection in the water and said with a wicked grin, "Wow girl, I can hardly recognize you."
Sarah confidently lifts the excess flesh and then lets it go, watching it jiggle, "Wow, you're quite the hefty one, Jessica."
Moments later, I returned with the dress and shouted in a panic, "What the hell, Sarah?!!!"
"If you keep this up, I'll make Jessica's body your permanent home," I warned, glaring fiercely, and Sarah replied, "Alright, I won't add any more weight," she chuckled, "Besides, your sister's body has finally embraced obesity and is gaining weight on its own."
"Ummm...Tommy, Sarah's right. Since she's been using Jessica's body for quite a while, it registers her as the original owner, and the changes come naturally," Rom explained, and my eyes widened in shock as I asked, "How much weight can Jessica's body gain by itself?"
"It truly hinges on Sarah's choice," Rom disclosed and I says with a weary sigh, "I hope it hasn't become irreversible."
"Regarding that," Rom stammered nervously, mustering the courage to elaborate, "Master PC is still evaluating the outcomes. Yet, when Sarah mishandled the weight systems, it added an extra thirty percent to the calculation."
"Oh damn!" I exclaimed, my expression turning cautious as I inquired, "Is there any way to obtain the final result from Master PC?"
"We won't have the results until next month," Rom replied, but then proposed, "However, if you wish to know for sure, take Sarah to an all-you-can-eat buffet. If she keeps devouring food and still feels hungry, it means the permanent settings has locked on of your sister's body."
"Do you want to head home, or go somewhere else?" Sarah interrupted my mental exchange with Rom, to which I responded, "I'm a bit peckish. How about we find something to eat?"
"Great choice, Tommy. I'm feeling hungry too," Sarah replied, but then Jessica's stomach growled, "To be precise, your sister's body is the one that's hungry."
"It's odd for Jessica's body to adopt Sarah's appetite," Rom mused absentmindedly, then suddenly grasped the reality, "Oh no, the setting is permanent."
We reached the closest restaurant, and Sarah instantly piled several plates high. As she continued to eat, she realized why Jessica's stomach appeared so large; it had expanded to accommodate the food.
"Wow, Jessica, you must be absolutely famished," Sarah chuckles playfully, then teasingly inquires of Jessica's body, "I’ll offer you more food if you consent to gain three hundred pounds by the end of this week?"
To her surprise, Sarah hears a soft response from Jessica's body, "I accept the terms."
"Wow, I didn’t expect a response," Sarah exclaimed, bursting into laughter, "And I was just being sarcastic!" With a mischievous grin, she continued, "Since you’ve agreed, can you loosen your stomach a bit more?"
"Given the pregnancies, it’s not wise to stretch the stomach any further. However, I can redistribute the weight to avoid any issues," Jessica's body explained, prompting Sarah to ask, "Tommy wanted larger breasts. Can you shift most of the weight there?"
"That can be arranged," Jessica's body confirmed, and Sarah wickedly smiled as she asked, "Once labor is over, can you loosen your stomach then?"
"That option will be available post-labor. However, complications may arise with future conceptions, making it tricky to find a solution," Jessica's body cautioned, and Sarah replied nonchalantly, "Can’t you let me manually adjust the stomach?"
"You can manually expand the stomach, but doing it wrong could lead to unexpected consequences," Jessica's body warned, and Sarah chuckled softly, saying, "Don’t worry, you can trust me."
"I'm fully aware of your desires. Yet, rational choices elude me. That realm is governed by the soul. Feel free to adjust the stomach as you see fit," Jessica's body declared while releasing the constraints.
Sarah eagerly enlarges the stomach and then slyly inquires, "I did a fantastic job, don't you think?"
"The adjustments you've made aren't quite right. However, I'm here to assist when necessary," Jessica's body replied, and Sarah grimaced widely, saying, "That's fantastic, but hold off on anything until your true soul returns." She giggled, "In the meantime, let's indulge you further." A sadistic grin spread across her face as a thought struck her, "You might end up ill from over eating. Can you manage the symptoms?"
"I've already taken care of the symptoms earlier so you can continue eating," Jessica's body informed, but Sarah's twisted emotions intertwined, encouraging, "With the stomach capacity increased by five hundred percent, you can now retain most of the weight in your stomach rather than your breasts."
"We share the same thoughts," Sarah giggled, and I suspiciously asked, "What are you whispering about?"
"I was curious if there's a shop anywhere that sells a larger swimsuits, but I couldn't think of any," Sarah replied nonchalantly. I then asked, "Ummm...are you still feeling hungry?"
"Actually, I'm pretty full," she admitted.
"Great, the permanent settings aren't on," I said, feeling a wave of relief wash over me. "How about we go shopping? I'm sure we can find a swimsuit that fits you perfectly."
"I adore shopping!" Sarah exclaimed, but then she suddenly sprinted off, saying, "I need to hit the restroom real quick."
"Seriously, you can't hold it?" Sarah grumbled at Jessica's body, then added, "You have one minute to get it together, but no throwing up allowed."
"The problem isn't overindulgence. You just ate too many sugary foods while trying to mitigate diabetes risks. Plus, I'm allergic to peanuts. Even a tiny bit on my skin causes irritation," Jessica's body explained, trembling from the effects and Sarah responded, "I had no idea you were allergic to peanuts."
"If you delved into my memories, you'd know peanuts are unhealthy," Jessica's body stated, and Sarah chuckled as she replied, "I could, but that would spoil the thrill."
Sarah gently places her hand on Jessica's forehead, exclaiming, "Whoa, you're really hot."
"I isolate the symptom, but I can't handle any more peanut intake," Jessica's body warned, and Sarah retorted sharply, "Don't faint on me until I've finished using you."
"Are you ready to go?" Sarah inquired with a bright smile, to which I replied, "Absolutely, which mall do you fancy?"
Sarah instructs Jessica's body to function despite its frail state. Naturally, being intertwined with Sarah's essence compels it to adhere to her devious schemes.
"Hey, Tommy. Do you happen to know if your sister has any food allergies?" Sarah questioned, and I responded while keeping my eyes on the road, "Not that I know of. Why do you ask?"
"Just checking before we consume anything that could be harmful," Sarah said as she peeled open a Snickers bar, "Your sister's body seems to have a strange craving for peanuts."
"Perhaps it's because she's pregnant?" I speculated, thinking that was the only reason, and Sarah replied, "You might be onto something, Tommy. Plus, I adore peanuts. Actually, can we grab some before we head home?" She giggled, "You know...just to ensure that craving doesn't linger later."
Sarah was feeling restless and said, "Can we make a quick stop at the nearest liquor store? I really need to use the restroom."
"Of course, we have time," I responded while looking for a liquor store, and as soon as we arrived, Sarah jumped out of the vehicle to hurry inside.
"Let’s strike a deal," Sarah said playfully in the restroom mirror, her lips curling into a smirk, "I’ll stop eating peanuts if you boost the chances of diabetes."
"There’s no need to boost those chances. Type one diabetes has already set in," Jessica’s body chimed in.
"That’s fantastic," Sarah exclaimed with glee, then inquired, "Is it possible to speed up the diabetes?"
"I can certainly escalate the condition, but the outcome will be unpredictable," Jessica’s body replied, and Sarah, with a glint of mischief in her eyes, asked, "Can you explain further?"
"It will result in a variety of complications within a week," Jessica’s body informed, but then tried to offer a safety net, "However, I can maintain the symptoms."
"No, I want everything unhealthy," Sarah commanded with a sadistic grin, and Jessica’s body obediently responded, "As you wish."
"One more thing," Sarah said with a sly grin, "I have one ova for entertainment. Is it possible for you to allow every ova to be fertilized naturally? However, if it does get fertilized, can you have it randomly generate embryos from one to infinite?"
"I don't recommend that approach," Jessica's body discouraged, but Master PC manipulated the body to fulfill the request, "Give me twenty-four hours. I might be able to release every ova for fertilization."
"That's fantastic," Sarah exclaimed joyfully, but then inquired for a clearer explanation, "How does it work?"
"Choose an individual to engage in intercourse with. After that, wait a week for the ovum to produce countless embryos. If everything goes as planned, the pregnancy will develop rapidly, resembling an average full-term pregnancy in just a matter of hours," Jessica's body explained the method, but then cautioned, "However, I can't maintain the pregnancy stability for long. Do you wish to proceed?"
"Before you go ahead," Sarah said with a mischievous glint in her eyes, "Are you certain it's akin to an average full-term pregnancy within just a few hours?"
"What I described earlier was merely an example. I'm uncertain about the full extent until it occurs," Jessica's body replied, and Sarah mischievously smirked while asking, "In other words, the pregnancy could be larger than anticipated?"
"Affirmative," Jessica's body replied simply, and Sarah wickedly grinned while requesting, "Can the pregnancy spiral out of control?"
Jessica's body was aware of Sarah's intentions due to their soul connection.
"I'll set the pregnancy to maximum expansion within the first hour of development. But be warned, this is an unknown variable that shouldn't be taken lightly," Jessica's body informed her of the situation, and Sarah eagerly asked, "Any measurements are possible, right?"
Sarah's longing was deeply connected to her body, and it comforted her, "Affirmative, once the ovum has finished creating embryos. If everything proceeds as planned, it may be possible to experience multiple term pregnancies within the first hour of development."
"What about an endless full-term pregnancy?" Sarah playfully inquired, and Jessica's body responded, "If your ambition is to achieve an unimaginably large pregnancy, I can facilitate that. But be cautious, for infinite knows no bounds, and the pregnancy will extend beyond comprehension."
"I don't mind," Sarah chuckled at the caution, and Jessica's body conveyed, "The settings have been established. To initiate, seek out someone to engage in intercourse with."
"One final inquiry," Sarah remarked with a wicked grin, "Can you maintain the pregnancies for a full hour?"
"Affirmative," Jessica's body responded, but then sensed Sarah's malicious intent, "If you desire to push the boundaries as far as possible within that hour, I can devise a solution, but I require authorization."
"You have the power to initiate it," Sarah replied with a playful smirk, and Jessica's body conveyed, "What you desire is now within reach. Naturally, I have connected your request to infinity for optimal outcomes."
"It's unfortunate that you can't give each embryo the space it needs to flourish," Sarah laments, her tone laced with sorrow, while Jessica's physique implies, "I could speed up the pregnancy to achieve maturity within the designated timeframe. Yet, according to my estimates, each ovum might yield around a million or even a billion embryos. If we were to quicken the growth, it wouldn't just be vast but also remarkably unstable."
"You mentioned earlier that infinite knows no bounds," Sarah remarked with a self-satisfied smirk, "And I intended to utilize infinite properly."
"Allowing the ovum to gather embryos in just a week and hastening the pregnancy to maturity is a brilliant strategy," Jessica conceded that the approach was effective and then proposed an alternative, "I could finish the tasks in a minute. Anything beyond that would be considered a post-term pregnancy."
"What do you mean by that, exactly?" Sarah asked, her curiosity piqued, while Jessica's body made the point clear. "Picture it as pouring water into a cup for just a minute. After that minute, you’ll need a sink, and then a bathtub. In merely fifteen minutes, you’ll have enough for a pool. Once you surpass that fifteen-minute threshold, the infinite truly starts to reveal itself. Are you ready to activate the setting?"
"Wow," Sarah exclaimed, her enthusiasm unmistakable, yet she paused, contemplating, "I like to activate the setting when Jessica's soul reenters her body. However, John might grow suspicious if his sister's belly suddenly balloons out like a hot air balloon."
"I could arrange for it to occur at unexpected times. It could happen within an hour or perhaps even several years down the line. However, the initiation on birthdays tends to work more in your favor," Jessica's body suggested telepathically, offering a tantalizing option.
"That's absolutely perfect. Save the setting and trigger it when Jessica's soul comes back to her body." Sarah declared, her excitement bubbling over.
Sarah chuckled with delight as she made her way back to the car. "Apologies for the delay."
I sensed something was amiss with Sarah and inquired with a worried look, "Is everything alright?"
"I'm perfectly fine," Sarah responded, her fingers teasingly delving into the depths of Jessica's womb, "Though, your sister's body seems a bit restless today, but just give me a few moments and I'll soothe the little vixen."
What's next?
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Master PC Adventures
Many mind-warping and/or reality-altering tales based on Master PC, a concept created by the fantastical and/or deranged JRParz!
“Welcome to Master PC's Command Center…” - “The Master allows you to become a virtual god to the people around you.” - “You now possess the power to bend their reality to your specifications.” - “You are the Master's Representative.”
Updated on May 3, 2026
by PoolofLust
Created on Oct 6, 2022
by IronLacedCarbon
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