LifeSim: Breeding Expansion Ch. 05

Author's Note: This story started as a fun commission reward for one of my awesome patrons. Standard disclaimer applies: this story contains fictional depictions of erotic scenarios, so act accordingly! All characters are at least eighteen, all situations are entirely fictional, and any resemblance to any real-life individuals or situations is entirely coincidental. Copyright Fidget, 2024. All rights reserved. Enjoy!

LifeSim: Breeding Expansion

by Fidget

Chapter 5

"Oh wow, it really does make you charismatic." Isabel almost whimpered as she squeezed her thick thighs together in unexpected pleasure. "I wasn't prepared for that!" The musk suddenly permeating the car threatened to have her soaking her panties in seconds. "You, uh, did a really good job making yourself irresistible," Isabel said, blushing as she tucked a strand of dark brown hair behind her ear.

Kenneth felt himself getting dangerously turned on at her reaction and display of clear sexual interest. So much for Isabel being the levelheaded one. "This was a mistake. We should leave now before it's too late," he said, preparing to turn the car around.

"No, no, I'm fine," she sighed dreamily, still looking up at him with a charmed smile as the powerful thrum of his voice swept over her, leaving her crotch awash in tingles. Even his voice is sexier! "I can control it - I just wasn't expecting it, that's all. I can still help. I guess one upside is that I definitely want to do whatever I can to help you out now," she said, grinning at him but still blushing fiercely. Kenneth was so painfully masculine that she could barely stand to look at him, but it was even more impossible to look away.

"Anyway, like I said, I definitely believe you now," she repeated, shaking her head to try to clear it of her sudden, overwhelming physical attraction to her coworker. Her crush refused to go away, however, especially with how close they were to each other in the confines of the car. "I can't deny that it's affecting me," Isabel continued unnecessarily in a voice filled with quiet amazement, seemingly more to herself than to him in the face of the unreality of her situation. The dumpy, straightlaced nerd from accounting seemed so virile, so desirable all of a sudden, and Isabel could feel her body responding, urging her to act on those desires.

She realized she was arching her back, showing off her small B-cups as her attraction subconsciously compelled her to flirt with him. And why shouldn't she? Isabel wanted Kenneth to look at her, to see her feminine body practically humming with pent-up sexual desire so he'd know she had become receptive to his advances. Isabel knew how dangerous this train of thought was, especially with what Kenneth had told her about his own sexual desire under the influence of the program, but she wanted to do it anyway, and couldn't quite seem to make herself stop.

Kenneth watched, fascinated, as his coworker tried to fight her new infatuation with him. Even though Isabel was aware of what was happening to her, her involuntary physiological responses to being in his presence were so powerful that she literally couldn't stop herself from advertising her growing sexual receptiveness.

For his part, Kenneth's eyes greedily devoured the pleasant mounds jutting from her chest, and his lizard brain eagerly noted the arousal and eagerness of this new potential mate, whether he consciously wanted to or not. Looking over at her, feeling the way his gaze focused on the healthy sheen of her hair, the taper of her waist from her small breasts down to her wide thighs, Kenneth knew it was impossible for their relationship to remain platonic while they were in here. It was such an odd feeling - one moment he was perfectly normal and in control of himself sitting next to a coworker he viewed almost as a sister, and the next he was being bombarded with a relentless, deep-seated urge to pursue sexual intercourse with her, a desire he knew Isabel was now feeling just as strongly as he was, if not even moreso.

And, now that they were both under LifeSim's influence, it was all the more likely that their hormones would run out of control and they'd do something they'd regret later. Kenneth knew that he should still just turn around and leave before he ruined his friend's life just as he had Linda and Kelly's, but he really did need to get rid of LifeSim, and he couldn't deny how good it felt to have a helplessly infatuated woman so close to him again after his long day at work, so he impulsively decided to stick it out. Watching Isabel get turned on just by being in his presence was incredibly addicting though, so he'd have to make sure he was extra careful not to accidentally cum inside her like he had the other women, especially now that his irresistible charisma was making Isabel's curvy body crave sex with him just like theirs had.

Isabel finally spoke up again in her meek, bemused voice. "You said the women are 'hyper-fertile' in here, right?" Kenneth nodded. "Well, now that I'm being affected too," she began, her cheeks still bright red at the new, R-rated thoughts rushing through her head as she continued to gaze rapturously at Kenneth. "Do you think it's made me... y'know, fertile?" Isabel tried to ignore the flutter in her stomach as she said the words, glancing down at her soft torso and wondering if the game had really manipulated her body as easily as it had manipulated her mind. She fought a tingle of anticipation growing between her legs at the knowledge that Kenneth was following both her look and her thought process.

Her abdomen still looked and felt normal, but that didn't mean that whatever crazy virus Kenneth had on his computer hadn't turned the innocent little pussy she was hiding under her clothing into a turbocharged breeding machine without her knowledge or consent. Isabel was hit with a feeling of incredible vulnerability at the thought of the dangerous power that Kenneth's cock likely now wielded over her pregnable body and captivated mind; even so, however, she was surprised at how much she wanted it in her pussy anyway, at how her artificial infatuation with Kenneth was making her willing to do anything she could to give him pleasure, even (or, increasingly, "especially") if that pleasure would more than likely cause his cock to flood her womb with his warm baby goo.

"It made the other women fertile, as you'll probably see when we get home, but I, uh, I don't know if it affected you like that too," Kenneth lied, completely certain that LifeSim had, in fact, made Isabel just as fertile as the other women he'd knocked up. He tried to ignore the faraway look on her face as she fantasized about the lump forming in his pants from his hardening member. "We probably shouldn't think about it too much."

Kenneth tried to take his own advice and not to think about how a video game had made one of his female coworkers infatuated with him, all while making her body highly susceptible to his semen, just like all of the other women in the neighborhood, and how it had made giving in to his urge to fill them with that semen the literal goal of his life. Instead, he focused on the fact that he could have sex with Becca again as soon as he got home, which succeeded somewhat in taking the edge off his need.

"You're probably right," Isabel said, also trying to think about anything other than her overpowering desire for her coworker's cock, and the fact that if she gave in to the temptation and let herself act on her feelings, she would almost definitely be impregnated. But would that be so bad? she was horrified to hear herself think in a moment of appealing, instinctive femininity before forcing the thought out of her head as they finally pulled into Kenneth's driveway.

"Hi Kenny!" Kelly and Linda both chimed in unison as they chatted by Linda's mailbox, and the significance of their matching bumps was immediately and emphatically apparent to Isabel in her current condition as she got out of the car.

"Your handiwork, I assume?" she asked, giving him an accusatory look that she didn't really feel as Kenneth sheepishly waved back. To her infatuated mind it seemed only natural that a virile male like Kenneth would want to spread his seed as widely as possible, and that any woman would instinctively want those high value genes for themselves. It was no wonder that these two had allowed themselves to be impregnated, and Isabel couldn't help but feel a bit envious toward them for having succeeded in doing so. It worried her how appealing the idea of carrying Kenneth's child felt all of a sudden, so she quickly changed the subject to distract herself. "How long has this been going on again?"

"Only over the weekend. I mentioned that there's a fast-forward button that seems to make pregnancies jump ahead without actually elapsing any time."

"Oh yeah." That was nonsense. This whole situation was nonsense. Still, Isabel couldn't deny her own feelings and behavior, and now she also had the evidence of the other women of the neighborhood staring rapturously at Kenneth from their porches. She drifted a bit closer to him as they walked up the path to his front door, as though her body were magnetically attracted to his instead of merely sexually, until she was finally rewarded with the sensation of the naked skin of her arm brushing against him, and a tingle of electric arousal flew between the two coworkers at the touch. Kenneth showed no reaction to what she'd done, but he also didn't make her pull away.

Isabel noted how the other women eyed her with jealousy, and tried not to feel lucky as they reached the door, still awash with the addicting feeling of her arm touching his. There's nothing to feel lucky about - I'm just here to fix a friend's computer.

As they entered the house the pair was greeted by Becca, whom Isabel recognized from company events over the years. Isabel noted Becca's abdomen swelling as well, confirming the text she had seen earlier, and she was once more made aware of the severity of the danger she was in. Honestly though, it didn't feel like danger so much as an opportunity to get Kenneth alone so he could finally bury his cock in her needy pussy.

"Oh, Kenny, you've brought a visitor! Hi Isabel, it's so good to see you again! You look positively radiant!" the very pregnant Becca gushed happily.

"Hi Becca! I'm just here to look at Kenneth's computer," Isabel responded in what she hoped was an innocent voice.

"Oh, I'm sure, dear," Becca said reassuringly. She rubbed her protruding stomach as she gave the two uncomfortably aroused coworkers a wink, drawing attention to the obvious reproductive tension hanging thickly between them. "Have a good time!"

Isabel tried to ignore how simultaneously ominous and exciting that sounded. She was suddenly very aware of her body, of just how turned on she was; it made her want to do very unwise things with Kenneth. She drifted even closer as they walked to the office, this time feeling her torso brush against his, and then she felt his arm wrap around her hips, grabbing her waist and abruptly pulling her close, almost possessively. She felt herself go weak in the knees, and had to be half-dragged into the room.

As soon as the door to Kenneth's office was safely closed behind them, the horny couple immediately pressed their bodies tightly against one another, and their lips met in a reckless, unwise kiss.

Sparks flew in Isabel's mind as she melted against this irresistibly sexy man, and she could feel her legs spreading as her body opened to his, already fully willing to let him do whatever he wanted with her now that she could finally feel Kenneth's cock twitching against her torso through his pants.

Just then, however, with a gargantuan effort, Kenneth pulled his face away from hers.

"I should show you the computer," he muttered gruffly.

"You could, or you could show me something else," Isabel responded breathlessly, still lost in the sensations running through her body from their kiss and fully swept up in her desire to go further as his voice pounded and thrummed through her. She had already begun instinctively thrusting her hips against his, her mind free of all thought except her need to have sex with this man, her vagina fully lubricated and her egg waiting eagerly deep inside her womb for fertilization. "I'm ready."

Kenneth had only been able to hold himself back this long by lying to himself, taking advantage of his impulsiveness by forcing himself to think that this was all a waste of his time, that every second spent here engaging in boring foreplay with tech support was a second that he wasn't actively balls deep in his wife, as he'd intended. He tore his gaze away from his coworker even as she quivered with arousal before him.

"I should leave." He needed to have sex, right now, and he firmly told himself that the only way he could do that was to go find Becca.

"No, don't leave! ...Ok, maybe you should leave." Isabel moaned in horny, confused anguish. "I just don't know anymore! I know my feelings are being manipulated, and that I can't trust them, but I really don't want you to go! But it's for all of the wrong reasons, and if you stay here we'll... I'll..." She sighed as she stood next to him, still burning with unfulfilled desire as she looked up into his dreamy face. If he made a move, she knew that she wouldn't be able to resist. Hopefully he would just kiss her again and that would be that.

Instead, Kenneth practically flew out of the room, his heavy footsteps making the floor reverberate as he searched for his wife. He found her in the bedroom, gasping with need as she fucked herself with a vibrator. Unable to spare enough attention to be take aback by the unexpected sight, he ripped his pants off, yanked the vibrator out of his wife's glistening cunt, and slammed himself up to the hilt as his heavily pregnant wife moaned encouragingly, and he was immediately rewarded with that familiar sensation of happiness and purpose at finally having sex once more.

Now that his sensitive cock was wrapped in pussy Kenneth had completely forgotten about Isabel's existence, but the same could not be said of her. She had seated herself in front of his computer, trying to focus through the considerable distraction of her still-burning arousal as she began to familiarize herself with LifeSim. Isabel had no choice but to do as Kenneth had asked, driven by her need to please him, but try as she might she couldn't ignore the sounds of Kenneth's deep, satisfied grunts reverberating through her body from the next room, and listening to Becca's high-pitched squeaks and sighs of sexual bliss soon drove her to stick a hand down her slacks and start stroking herself as she explored the game's interface.

As she stimulated her needy little nub, however, she slowly found herself forgetting about working on the program as she succumbed more and more to the vicarious pleasure of watching Kenneth and Becca's avatars writhe under the sheets in the bedroom of Kenneth's digital house, all the while imagining that her low-poly avatar was getting fucked instead.

Kenneth was just so much more desirable than she had ever thought that anyone could possibly be, and even though she knew her feelings weren't her own, that they were solely due to the game's influence over her, that hadn't made it any easier to resist when she'd thrown herself at him just minutes before. As soon as Isabel had first felt the program's wonderful effects on her body, it was a foregone conclusion that she'd let Kenneth do whatever he wanted to her. At this point it was just a matter of time.

Isabel completely understood why the other women had given in so fast and been so easily impregnated - any girl not aware that their overwhelming new feelings were artificial would see no reason whatsoever not to coax Kenneth into filling her with cum as soon as possible. Heck, Isabel was aware, and she had still been unable to resist the urge.

As she jilled herself while watching the avatar of her coworker fuck his pregnant wife on the screen in front of her, she noticed how his happiness was slowly increasing, coming ever closer to the end of the bar above his head. It struck her how unfair it was that only Kenneth could accumulate happiness points toward changing his traits and life goals - as strange as it was to think about, Isabel was now just an NPC in someone else's game, able to be modified at will and helpless to resist the effects of that modification, with no recourse whatsoever. Kenneth had made his avatar irresistible to the NPC women in his neighborhood, and so, now that Isabel was a woman in his neighborhood, she couldn't help but be obsessed with having sex with him. There was nothing she could do.

How much she wanted to feel Kenneth's hard cock sliding between her thighs wasn't actually the problem, of course; his sexy, throbbing meatrod was perfectly safe in a vacuum. The problem was the two large, virile testicles dangling innocuously between his legs that were directly connected to that erect, eager phallus. Isabel imagined them practically sloshing with the potent semen they were constantly producing, ensuring that sex with Kenneth would inevitably fertilize his endless supply of willing mates. And Isabel was feeling very willing at the moment.

Why does sex have to be tied to reproduction? she lamented. Why wasn't Kenneth's tasty cock just a solid dildo of throbbing muscle that she could use to take the edge off her constant, inescapable attraction to him? Why did that tempting dick have to come with a hollow shaft that would directly connect those heavy balls to the depths of her womb? She needed to bring Kenneth to a sexy, satisfying orgasm deep inside her, but she knew that she couldn't do that without also causing cum to gush through his cock, and that would drown her receptive, impressionable egg in a welcome sea of compelling male genetic information.

For that matter, why couldn't she just be a sterile cocksleeve for Kenneth? Why did her flirty little vagina have to be so damn fertile? Why couldn't she just enjoy the feeling of his sexy cum flooding into her from his big, manly balls, filling her up to the brim with the essence of his masculinity, without that semen invariably kindling her womb into life?

After all, Isabel's desires really had nothing to do with reproduction (ok, she confessed to herself, that's not quite true, but still), so why did that have to be the unavoidable outcome? Isabel should be allowed to have some innocent, meaningless sexual fun with her coworker if she wanted to - sure it was a bit awkward socially, but it shouldn't have permanent, life-changing consequences! And the more pressing issue: why weren't those consequences more worrisome to her? Why was the thought of getting bred by Kenneth so damn appealing all of a sudden?

The overarching problem was that, in this neighborhood, sexual intercourse had been effectively returned to a state of nature. Indulging in some appealing casual sex with Kenneth would normally be fine, but now that all of the women in the neighborhood were constantly fertile - including me, Isabel thought wistfully - her powerful need to feel Kenneth's cock stimulating itself inside her tingly vagina was unfortunately no longer just an anachronistic instinct that, thanks to modern methods of contraception, could be safely indulged in to her heart's content; it had reverted to its original purpose, an emotion designed to overpower reason and persuade men and women to engage in pleasurable coupling so that their genes would perpetuate themselves.