He flipped her onto her back without pulling out, pinning her wrists above her head.
His cock drove deeper in this position, the head battering her cervix with every thrust.
Mira wrapped her legs around his waist, heels digging into his ass to urge him harder. "Don't stop, fuck me harder," she ordered, her voice hoarse.
Alex obliged, pounding into her harder than before. His free hand squeezed her breast, thumb flicking her nipple before he lowered his mouth to suck hard on the peak.
Mira arched beneath him, her orgasm building fast.
"Yes! Fuck, yes, Alex! Deeper!" she cried out, totally abandoning her strict, professional persona.
She ground her wet pussy furiously against him, completely addicted to the raw mana and the intense friction.
Every time he thrust deep inside her, the heavy, sweet scent in the air grew thicker.
The heat in Alex's lower belly became unbearable. The remaining Ember-Leaf medicine on his skin combined with the deep, wet heat of Mira's body, pushing him to the absolute limit.
"Mira... I can't... I'm going to..." Alex cried out, his voice pitching high and breathless.
"Do it!" Mira screamed, wrapping her thick thighs tightly around his waist to trap him against her. "Fill me up! Give me all of it!"
Alex's spine arched violently. His mind went entirely white.
"Ahhhhh!"
Right as he was about to surrender to the overwhelming urge to completely fill her, a terrifying image flashed through Alex's hazy mind.
Lily, thrashing on the bathroom floor, her body rapidly and painfully mutating just from a single taste of his fluids.
He had no idea if those extreme secondary changes were permanent or dangerous.
He couldn't risk doing that to Mira, no matter how desperately she begged him or how badly his body wanted to give in.
With a desperate, breathless cry, Alex yanked his hips back, pulling his throbbing cock out of her tight pussy at the absolute last second.
He came incredibly hard.
Thick, highly potent nectar pumped out into the air, splashing hotly across Mira's flushed stomach and the underside of her heaving breasts.
Because he had already released so much earlier into the glass beaker, what he released this time was not even a tenth of his previous climax.
However, this climax felt even more blindingly sensitive.
It sent violent, uncontrollable tremors down his spine, forcefully draining every last drop of Yin mana from his exhausted body.
His soft, pale chest heaved rapidly, his hyper-sensitive nipples brushing against the cool lab air as his legs completely turned to jelly.
Even without him inside her, the brutal, slick friction of his sudden pull-out and the scorching heat of his nectar splashing against her bare skin pushed Mira right over the edge.
"Alex—!" Mira screamed, her eyes rolling back. Her body completely locked up as she cummed again.
Her toes curled tightly, and her inner walls spasmed aggressively around empty air, gushing wave after wave of her own cum down her thighs.
Both their legs gave out simultaneously, and they both collapsed heavily against the cold metal edge of the examination table.
They leaned against each other, their bare skin sticking together, covered with a thick layer of sweat.
The quiet lab was completely silent except for the sound of their ragged, overlapping pants.
Alex slowly pulled back, wiping the thick, slick wetness from his chin with the back of his hand.
His chest heaved as he looked up at the beautiful researcher.
Her lab coat lay completely forgotten on the floor, her purple shirt was torn open, and her heavy breasts heaved with every desperate breath she took.
"God..." Mira panted, her eyes fluttering open.
The hazy, lust-drunk look was gone on her flushed face. She looked down at Alex, her gaze completely softening. "I didn't expect... you to be that good… It's been a long time since I've done that."
"You told me to take charge, how could I hold back…" Alex whispered breathlessly, feeling a strange mix of male pride and overwhelming physical exhaustion.
Mira let out a soft, dirty laugh. She reached down and grabbed his bare shoulders, pulling him up from his knees.
As Alex stood up, their bare chests brushed together. The contrast was striking, Mira's massive, soft D-cups or even large pressing directly against Alex's flat, pale chest with its increasingly puffy, feminine pink nipples.
"Ah!" he whimpered, his back arching slightly.
"What?!" Mira's dark eyes instantly locked onto his chest.
The dominant, curious researcher inside her woke up again, mixing dangerously with the heavy, primal arousal still burning in her blood.
"So incredibly sensitive," Mira murmured, her voice dropping into a dark, commanding purr. "You took care of me so well, Alex. It's only fair I return the favor. Let's see just how much your body is really changing."
Before Alex could protest or step back, Mira grabbed his soft waist with both hands.
Her grip was firm, completely trapping him against the edge of the metal counter.
She leaned down, burying her face directly into his soft, pale chest.
"Mira, wait—nnngh!" Alex's panicked words instantly dissolved into a high-pitched, breathy whine.
Mira opened her mouth and dragged her wet, hot tongue directly over his swollen right nipple.
"You sucked me so hard.. it's time to return the favor…Heehehe!" The sensation was absolute torture.
"Ahhh! Fuck... Mira, it's too much!" Alex cried, his hands flying up to grip her thick, messy hair.
He tried to push her away, but his body completely betrayed him.
His hips bucked forward involuntarily as a fresh wave of clear, sticky wetness soaked into his seamless briefs.
"Don't move," Mira commanded wetly, her lips wrapping entirely around the puffy pink bud.
She began to suck on it hungrily, swirling her tongue around the tight, hard peak.
She sucked on him exactly like she would suck on a woman's breast.
The sheer humiliation and the blinding, unfamiliar pleasure completely short-circuited Alex's brain.
He threw his head back, his soft throat completely exposed to the cool lab air.
"Look at you," Mira teased, pulling back just enough to let the cool air hit his wet, painfully hard nipple.
She reached up and pinched his other nipple hard between her fingers.
"You're reacting exactly like a girl. You're leaking so much just from me playing with your chest."
"I'm not... I'm a guy... ahh!" Alex cried out as she twisted her fingers, sending another spike of blinding pleasure crashing down his spine.
"Not for long, judging by how soft this skin is getting," Mira whispered, pressing her body completely flush against his.
She ground her soaking wet, naked pussy right against the front of his silk pants. "You feel so good, Alex. So smooth. So delicate."
She began to check out the other nipple. Her mouth descended on his left nipple this time, sucking hard enough to make the sensitive flesh throb.
Mira's tongue circled his swollen nipple with agonizing slowness, tracing the puffy pink areola before flicking sharply against the hardened peak.
Alex's back bowed off the cold metal table, a strangled whimper tearing from his throat.
"God, you're so responsive now," Mira murmured against his hypersensitive skin, her breath hot and wet.
She shifted her weight, pressing her naked thigh between his legs, and his hips bucked instinctively, grinding his trapped cock against the firm muscle. "You're practically humping my leg like a needy little thing."