Just as Alex was desperately trying to refocus his mind from the uncontrollable, mind-shattering pleasure his body was experiencing, he suddenly noticed something wrong.
Lily, who was still kneeling on the floor between his spread legs, looked half-conscious and entirely dazed.
A thick string of his sweet fluid still glistened on her chin, but her expression of pure bliss suddenly twisted.
She let out a sharp, breathy gasp, her body beginning to twitch with sudden discomfort.
"Nnngh... ahh... what's happening...?" Lily whimpered, letting out soft screams of confusion and pain as she held his thighs tightly.
Looking at her strained expressions, Alex quickly realized she might not be in any pain, but rather an intense, overwhelming physical discomfort.
She let her hands go of his thighs and began to urgently scratch at her own body. Her hands flew to her tight blue sports bra, clawing at her breasts.
Then her fingers darted down to rub frantically between her legs, over her face, and through her short hair.
It was as if thousands of tiny ants were crawling right under her skin.
Before Alex's wide, shocked eyes, as the time passed, her body began a terrifyingly rapid secondary development.
It was as if her natural growth had been accelerated dozens of times over in a matter of seconds.
Her body was forcefully optimizing itself, absorbing in the dense, mutated Yin energy hidden inside his sweet essence.
"Ahhh! It's so icchi... my chest feels so tight...!" Lily sobbed, her back arching violently on the bathroom tiles.
Her modest B-cup breasts began to swell rapidly, pushing heavily against the restricted fabric of her sports bra.
The material groaned, stretching to its absolute limit as soft, heavy mounds of new flesh spilled over the top and sides, expanding into full, heavy C-cups.
Her nipples hardened painfully, poking sharply against the tight fabric.
At the same time, her hips widened with a series of soft pops.
Her buttocks grew noticeably larger, plumper, and much softer, stretching her black spandex shorts until the seams looked ready to burst.
Her short, sweaty hair rapidly grew past her shoulders, eight to nine inches longer down her back in thick, glossy waves.
Even the bone structure of her face shifted slightly, as her jawline softening, her skin clearing up perfectly, and her facial features becoming noticeably more delicate and beautiful.
She writhed on the floor, panting heavily as the rapid, forceful maturation ran its course.
"Fuck, it's the pheromones and the Yin energy..." Looking at Lily's completely unexpected reaction, a shocking thought immediately struck Alex's hazy mind.
He quickly pulled his own spandex and underwear up over his hips, hiding his still-sensitive little brother as he stared down at the completely transformed girl.
It can be said that after drinking his cum, the wildly strong pheromones and raw mana, literally triggered a physical evolution inside her body.
"It's strange, though. Nothing happened to Elena when she drank my cum a few days back," Alex pondered, panting softly as he tried hard to focus his chaotic thoughts.
He leaned against the metal wall of the stall, his mind racing to find an answer.
"Is it because my shedding phase has improved to 86%, making my fluids that much more potent?"
"Or is it because Lily is only in early eighteen, and her body is still naturally in a growth phase, so the pheromones just accelerated her maturation or even improved here?"
He watched as Lily finally stopped twitching. She lay curled on her side, her chest heaving as she let out deep, exhausted sighs.
The size of her new curves made her look much more mature, as if in her early twenties.
Alex bit his lip, a deep sense of dread washing over him.
"Are these changes temporary... or permanent?" he wondered, terrified of what would happen if the other girls, or Instructor Sylvia saw what he had accidentally done to Lily.
"Anyway, what the hell am I going to say to her when she wakes up?" Alex thought as he stared down at Lily's unconscious, heavily altered body.
"How is she going to react when she looks down and sees herself? Will she scream? Will she run out there, expose me, and label me as a pervert in front of everyone?"
"Fuck, should I hide her?" A cold sweat broke out across his forehead.
If she told Instructor Sylvia or the other girls what just happened, that the girl in their class had a dick, leaked intoxicating pheromones, and somehow mutated her body in a bathroom, his life would be over.
The Gene Association would lock him up in a lab.
"Damn it... shit, why did I get myself into another unpleasant situation again?" Alex squeezed his eyes shut, his hands pulling his hair in frustration. "Why do things like this keep on happening to me?"
He cursed himself for being such an idiot. He should have just stayed home.
He should have run out of the building the moment the old man sent him to the women's class.
Instead, he dragged himself into this mess and involved another girl.
"Damn these pheromones… when can I control them?" Lily was just trying to be nice, and in return, she was completely mind-broken by his rampant pheromones and physically mutated by his bodily fluids.
"Mnnngh..." A soft, hazy groan broke through Alex's panicked thoughts.
His eyes open.
Lily was beginning to stir on the bathroom tiles. She shifted her weight, and the sound of fabric tearing slightly echoed.
Her blue sports bra was now overstretched, the seams digging painfully into the underside of her new, heavy C-cup breasts.
Panic seized Alex. He suddenly remembered his own state.
His tight black spandex and underwear were pulled up, but his white strapless bra was still shoved down to his waist, completely exposing his pale, soft chest and his puffy, red nipples that the Empress had ruthlessly abused.
With trembling hands, Alex frantically grabbed the elastic band of the white bra and pulled it up.
"Ah!" He bit his lower lip hard as the fabric tightened against his hyper-sensitive nipples.
Down on the floor, Lily fluttered her eyes open.
Her beautiful, newly matured face looked deeply flushed and incredibly confused.
She blinked up at the bright ceiling lights, letting out a long, wet breath that still smelled faintly of his cum.
"So heavy..." Lily murmured weakly. Her voice sounded deeper, softer, and much more mature than her usual cheerful tone.
She sluggishly raised her hands to rub her eyes, but as her arms brushed against her own chest, she froze.
Her eyes went wide.
She slowly looked down at her torso. The soft mounds of flesh spilling out of her tight sports bra were impossible to ignore.
"Wow... what happened to me?" Lily gasped, her hands instinctively grabbing her new, heavy breasts.
She squeezed the soft flesh in pure disbelief, her cheeks burning dark red as a sensitive ache shot through her body.
She looked down further, noticing how insanely tight her spandex shorts had become around her newly widened hips and plump thighs.
Then, her wide, panicked eyes slowly looked up from the floor and locked onto Alex, who was sitting frozen on the toilet, hugging his knees to his chest.
The air in the tiny bathroom grew incredibly tense.
The heavy, sweet scent of the pheromones was still floating around them, but the intense, mind-numbing haze had faded just enough for Lily to remember exactly what she had just done.
She suddenly remembered the taste. And most importantly, she remembered what she had pulled out of his underwear.
"You..." Lily whispered, her lips trembling as she stared at his pale, flawless face. "You're... a guy?"
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