You enter the school lab, noone seemed to be around. The noises you heared from here must have been from your mind, you conclude. As you want to leave, you here the noise again. It comes from the next room. Now fully intrigued, you go in, and find your classmate Liane, standing with her back to you in a lab coat. She has been hit pretty hard by the virus, she had grown bigger boobs and ass aswell as a cock, making her a futanari. She is desperate to reverse the changes and cure the virus. As you want to say hi, she turns around - and looks very different than before. "Oh, why the fuck are you here??? I have permission to be here... hey, don't look!" You are Struck by what you see - her gigantic cock and big tits, aswell as her now sweet face.

"Ahh! Not now!" Liane gasps as she sees her friend Ashley enter the lab. "Ashley, I need your help with something!" As if in response to her words, the pink-haired girl's ass puffs up even more, and a small amount of clear pre comes out from between her thick lips.

"Oh my god, Liane! What did you do to yourself? You look... incredible!" Ashley exclaims, clearly not meaning it in a bad way at all.

"I did nothing of the sort!" Liane snaps, trying to keep her focus on the experiments in front of her. "The virus did this to me! I need your help to reverse it before anyone else sees and spreads these... changes," she says, glancing down at her massive cock and balls.

"But first, could you do me a favor? There's something really important I need to test out on someone." She grins mischievously and motions toward Simon with her head. "You're both new to this...

"Oh my!" exclaims Ashley, her eyes widening at the sight of your friend's gigantic futa cock. "That... that's huge! I mean, in a good way! Sure, I can help you out, Liane." She takes a step closer to Simon and begins to stroke his cheek with her fingertips.

"So, what exactly do you want me to do?" she asks, looking up at him through her long eyelashes. "I'm game for anything."

"Oh, you have no idea," Liane chuckles darkly, her eyes fixed on Ashley crotch. "I need to test the limits of this... equipment." She licks her lips and takes a step closer, resting a hand on his shoulder. "Ashley, why don't you help me " she says casually, nodding toward Ashley crotch. "I need to see how big he can get."

"Well," she replies with a knowing smirk, "I've been working on this serum that... enhances certain attributes." She strokes his chin gently, guiding his gaze down to her massive cock and balls. "It could make your friend here even bigger... or it could do something else entirely." Her fingers trail down to the base of his shaft, causing him to give a small groan.

"I don't know yet," she admits with a wicked grin. "That's why I need your help, Ashley." She places her hand on the other girl's hip, nudging them closer together. "You can be my guinea pig while we test it out."

With that, Liane grabs Ashley by his hair and forces him down to his knees in front of her.

"Um, let's see..." Liane mutters as she pulls out a tape measure from her lab coat pocket. "My cock is... Setenta-one inches long and about dieciséis inches in girth," she says, wincing slightly as she wraps the end around its base.

"And my balls?" Ashley asks with an interested look on his face. "They're..." Liane trails off, cupping one of her massive orbs in her hand and squeezing. "...about this big,"

"Oh right!" she exclaims, finally remembering about the other part of her transformed anatomy. "My balls are... twenty-two inches in diameter." She looks down at them again, feeling a strange mixture of pride and embarrassment. "I've never been so well-endowed before..."

"Hmm?" Liane blinks, looking up at you quizzically. "Oh, um... I guess that's one way to put it," she says with a small laugh. "But really, it's just the virus doing its thing. It's kind of fascinating, actually." She turns her attention back to Ashley and gives him a naughty grin. "Now then, where were we?"

"Oh right!" Liane's eyes light up with excitement as she positions herself behind Ashley. "This should be... interesting." She lines her cock up with his tight little hole and pushes forward, slowly but surely forcing her way inside. Ashley lets out a gasp as he feels the immense size of her invading him, stretching him further than ever before.

With a final thrust, Liane is seated all the way inside of her friend's ass, their bodies pressed together from behind.

Ashley winces and gasps as he feels the full weight of Liane's massive cock inside him, stretching his ass to its limits. He lets out a moan, both from the pain and from the strange pleasure coursing through his body. "It... it feels... incredible..."

As they begin to move together, Ashley starts to get more into it, moaning loudly as Liane's cock hits every sweet spot inside of him.

Liane throws her head back, letting out a long, low groan as she fucks Ashley hard and fast from behind. The sensation of being so tightly enclosed by his body is overwhelming, but in the best possible way. She can feel every thrust reverberating through him, amplifying the pleasure for both of them.

"Oh god... I'm going to cum..." she pants, her hips bucking wildly as she reaches the brink. "Ashley... prepare yourself..."

With a loud cry, Liane's body tenses and her entire being convulses as she shoots rope after rope of hot cum deep inside of Ashley. Her cock throbs rhythmically, filling him to the brim with her seed. The force of her orgasm causes her to collapse onto his back, panting heavily as she comes down from her high.

"Oh... wow..." Liane whispers, looking up at the ceiling in disbelief. "That was... incredible."

After a few moments to catch her breath, Liane pulls her spent cock out of Ashley's ass and stands up. She wipes herself off with a nearby cloth and inspects the evidence on the ground before returning to her previous task. "Well," she says with a smile, "that should give us enough data for now."

As Liane continues working, you can't help but feel a strange sense of camaraderie forming between the three of you.

"Easy now," Liane chuckles, glancing over at you with a playful smile. "I'm just doing some research." She takes hold of her massive cock and begins to stroke it slowly, her other hand moving up to her aching balls.

As she masturbates, she continues to talk about her work, explaining the various aspects of the virus and how she hopes to find a cure for everyone affected by it. You listen intently, finding yourself both fascinated and aroused by her knowledge and enthusiasm.

Liane throws her head back, letting out a low groan as she nears orgasm once again. "Well," she says breathlessly between moans, "I suppose there's no harm in... exploring other possibilities." With that, she turns to face Ashley and positions herself over his lap.

"You ready for round two?" she asks with a wicked grin, guiding her cock towards his waiting asshole. Ashley nods eagerly, his eyes fixed on the massive cock that's about to fill him once more.

With a forceful thrust, Liane drives her cock all the way inside of Ashley's body. He lets out a sharp cry as she stretches him wider than ever before, but he doesn't seem to mind. If anything, it only serves to heighten the pleasure for both of them.

Liane begins to move roughly, fucking Ashley hard and fast from above, her moans echoing through the lab as she loses herself in the sensation of being inside him.

As Liane continues to take Ashley roughly, you can't help but feel a strange mix of arousal and jealousy. You watch as her massive tits bounce with each thrust, the pink hair surrounding her nipples standing on end. Her skin is flushed and slick with sweat, making it all the more appealing.

With a loud groan, Liane's body tenses as she feels herself on the brink of orgasm once again. She grips Ashley's hair tightly and starts to thrust harder, his head banging against the floor with each impact.

Finally, her hips buck violently forward one last time, and she cries out as a hot, thick load of cum erupts from her cock, painting Ashley's insides with her seed.

"T-thank you..." Liane pants, still breathing heavily as she pulls out of Ashley and collapses onto the nearby table. "I just... can't help myself." She looks over at you with a sheepish grin. "It feels so good."

"Futanari?" Liane repeats, looking confused for a moment before realization dawns on her face. "Oh! You mean... because of this?" She gestures vaguely at her body, still glistening with sweat and cum. "I never really thought about it like that."

"Well," you say hesitantly, mustering up the courage to ask, "if I were to, um... offer you a chance to reverse some of your changes..." You trail off, not wanting to get too hopeful.

Liane looks down at her own body, considering the possibility for a moment before shrugging. "I don't know," she says with a sigh. "Part of me kind of likes this new version of myself... It's just so... powerful."

Ashley blushes and looks away, clearly uncomfortable with the attention. "Um, actually," he mumbles, "I am kind of hungry..." He glances back at Liane uncertainly before turning back to you. "What do you think, Simon? Should we go find some food?"

"Hey," Liane interrupts with a grin, "I'm not saying no to free food. But let's leave the... more intimate activities for later, okay?" She winks at you and nudges Ashley gently towards the door. "Come on, let's go find something tasty."

Liane's eyes widen in surprise as you block her path, demanding that she make Ashley suck his dick. "Um, Simon?" she says hesitantly, glancing between the two of you. "Are you sure about this?"

Liane shrugs and kneels down in front of Ashley, grabbing his shoulders and pulling him close. "Alright then," she purrs, leaning in until her lips brush against his ear. "If you insist..." Without warning, she shoves his head down onto her massive cock, groaning softly as he starts to choke and gag around the intrusion.