The School Festival cleanup was grueling, but Rito had thrown himself into it with his usual diligence. By the time the last cardboard tree was recycled and the final streamer was taken down, the sun was setting, painting the school corridors in deep, melancholic orange.
Rito wiped his brow, checking his phone. A new message blinked on the screen.
Sender: Mikado-sensei
Message: Come to the infirmary alone. Time for your post-transformation checkup. Don't make me come and get you.
Rito sighed, shoving the phone into his pocket. He knew this was coming. Ever since the Darkness Explosion, his body was obviously... different. Stronger and faster, yes. But also hotter, heavier, and humming with an energy he didn't quite understand how to deal with yet.
He walked down the quiet hallway to the infirmary. The sign on the door said "CLOSED", but the light inside was on.
He knocked.
"Enter." a smoky voice called out.
Rito slid the door open and stepped inside.
The infirmary smelled of black coffee, antiseptic, and Mikado's expensive perfume. The blinds were drawn, leaving the room in a dim, clinical twilight illuminated by the glow of several computer monitors that definitely weren't standard school issue.
Mikado Ryouko sat at her desk, spinning a scalpel between her fingers. She was wearing her usual white lab coat, but underneath, she wore a deep crimson dress that clung to her curves like a second skin, and a cigarette dangled unlit from her lips.
"You're late, Yuuki Rito." Mikado said, not looking up from her screen.
"Sorry about that, sensei," Rito said, closing the door. "The cleanup took longer than expected."
"Lock the door." Mikado ordered.
Rito hesitated for a moment and then turned the lock.
Click.
"Now, come here." she said, finally spinning her chair around. She looked him up and down with eyes that felt like they were peeling away his skin. "Though you look tired. But your aura... it's stable. The Darkness Energy has settled into your cells nicely."
"I feel okay." Rito said honestly. "I am stronger than before. But... sometimes I get really hot. And well… my... reactions... are faster."
"Reactions?" Mikado raised an eyebrow, a teasing smirk playing on her lips. "You mean your neural reflexes? or your other reflexes?"
Rito flushed. "Well… both. It's... been quite intense."
"Take off your shirt." Mikado commanded, standing up. She snapped on a pair of latex gloves. "I need to see the integration points."
Rito nodded. He understood the necessity and quickly unbuttoned his shirt and pulled it off, folding it neatly on a chair.
Mikado let out a low whistle.
Rito's upgraded upper-body was on full display, his muscles were dense and deeply carved. Under the clinic's fluorescent light, the faint golden sheen of his skin was visible, tracing the lines of his veins like liquid gold.
"Impressive." Mikado murmured, walking around him. She ran a gloved finger down his spine. Rito shivered. "You are still evolving; your muscle density has tripled since the last scan. You're practically bulletproof now."
"That's a good thing, isn't it?" Rito asked.
"For survival? Yes. But for daily life? It becomes complicated."
She walked back to his front. She pressed her hands flat against his chest, right over his heart.
"Cough."
Rito coughed.
"Heart rate is elevated." she noted. "But strong. Your core temperature is running at 102 degrees. For a human, that's a fever. But for you... it's idle."
She moved her hands down to his abs. She pressed, testing the resistance.
"It's hard." she commented. "Like an armour."
Her hands drifted lower. She stopped at the waistband of his trousers.
"Now," Mikado said, her voice turning clinical but with an undeniable edge of curiosity. "Drop the pants. I need to check the primary energy conduit."
Rito stiffened. "Sensei... is that really necessary?"
"Yuuki-kun." Mikado sighed, crossing her arms. "You pumped enough energy into Mikan-chan to give her a magical tattoo. You filled two of her friends with bio-luminescent fluid. I need to know if your... output... is safe. Or if it's going to mutate them further."
Rito paled. "Mutate? You mean... I could hurt them?"
"I mean that I don't know." Mikado said seriously. "That's why we need the tests. Do you want to risk Lala-chan, Haruna-chan or Run-chan's health just because you were too shy to get a checkup?"
That comment hit right where it needed to. Rito's protective instincts flared. He had decided from the moment he had gained memories of another world that he would do anything and everything to keep the girls happy and safe.
"No…" he said firmly. "You're right. Check everything you need to make sure."
He unbuckled his belt and pushed his trousers and boxers down to his ankles.
His cock sprang free.
It was heavy, semi-soft but imposing, resting against his thigh.
Mikado's eyes concentrated behind her clinical glasses as she leaned in closer.
"Fascinating." she whispered. "The vascular structure has expanded. The blood flow potential is... massive."
She reached out. She cupped his heavy balls in her gloved hand.
"And these..." she murmured, weighing them. "The so-called production factories. They feel densely packed."
Rito groaned, looking at the ceiling. "Sensei... your gloves are cold."
"Don't worry, they'll warm up." Mikado promised and looked up at him. "I need a sample, Yuuki-kun. A fresh one."
She walked to a cabinet and pulled out a sterile glass beaker.
"Sit on the bed." she ordered. "I'm going to extract it manually. For science of course."
Rito swallowed hard, but listened to her, nevertheless. He walked to the examination bed and sat on the edge, his legs spread, his now-rising erection bobbing slightly with his movement.
"Okay." Rito said, his voice shaking but resolved. "Do what you have to do."
…
The examination bed crinkled as Rito shifted his weight, trying to find a comfortable position that didn't feel completely exposed. It was impossible. He was sitting naked in his school infirmary, with his legs spread and his most private parts on display for the school doctor. It was one hell of a situation.
Mikado stood between his knees, holding the glass beaker in her left hand. She looked calm, professional, and terrifyingly focused.
"Relax, Yuuki-kun." she said, her voice smooth. "Tension will restrict your blood flow. I need you operating at peak efficiency."
"Well, I'm trying." Rito gritted out, gripping the edges of the mattress. "But… but this is... weird."
"Don't seat it. It's just a medical procedure." Mikado corrected, though the glint in her eye suggested otherwise.
She reached out with her right hand with the latex glove tight against her skin and wrapped her fingers around the base of his shaft.
Rito hissed. "Hngh!"
Even through the latex, her grip was firm and knowledgeable. She didn't squeeze too hard, but she didn't treat his dick like glass either. She ran her thumb over the thick vein on the underside, checking the pulse.
"Strong pulse." she noted aloud, watching his reaction. "Your sensitivity also seems heightened. Does this hurt?"
She slid her hand up, slowly, dragging the latex over the ridges of his veins.
"No..." Rito breathed, his head falling back slightly. "It doesn't hurt. It just feels... intense."
"That's good."
She reached the top. Her thumb circled the rim of the flared head. A clear bead of pre-cum was already leaking from the slit.
Mikado tapped the bead with her gloved finger, then rubbed it between her thumb and forefinger, testing the viscosity.
Squish.
"Lubrication production is up 200%." she observed. "You're leaking before we've even started properly. That explains the mess you made in the archive room."
Rito flushed dark red. "You... you know about that?"
"I'm the school doctor. I know everything." Mikado smirked.
She positioned the beaker under the head of his cock, catching a few stray drops. Then, she began to move her hand in earnest.
Schlick... schlick...
The sound of the latex sliding against his skin was distinct, a sharp, synthetic friction that sent shivers down Rito's spine. It wasn't the soft warmth of Mikan's hand or like the eager roughness of others. It was measured, detached, and yet incredibly arousing because of the power dynamic.
"I need a complete sample." Mikado instructed, watching the level of the liquid in the beaker rise slowly as he dripped. "Don't hold back. If you want to moan, do it. I also need to measure your vocal response to stimulation."
"That's... not even a real test!" Rito gasped, his hips bucking slightly against her hand.
"It is for me." Mikado teased.
She picked up the pace.
Schlick-Schlick-Schlick.
Rito's honest body responded with vengeance. His cock swelled in her grip, hardening to its maximum density. The veins stood out like cords. The heat radiating from him warmed her hand through the glove.
"Oh my," Mikado whispered, breaking character for a second. "The blood volume... it's incredible. No wonder the girls are powerless against you. You're practically a hydraulic press."
She used her thumb to rub the frenulum, the sensitive strip of skin under the head, in sharp, rhythmic circles while she stroked the shaft.
"Ah! Sensei! There! That's...!"
"Sensitive?" Mikado noted. "Noted. The nerve endings here seem to be conducting bioelectricity."
She twisted her wrist, spiralling her grip around him.
Rito threw his head back, his eyes squeezing shut. The pleasure was sharp and focused. He wasn't being just pleasured; his response to pleasures was being analyzed, and the sheer scrutiny of it was driving him crazy.
"I'm... I'm getting close!" Rito warned, his voice straining. "Sensei! The beaker!"
"Aim it well." Mikado commanded calmly, holding the glass steady right in front of the tip. "Don't spill a drop. I need an accurate volume measurement."
"I can't... I can't aim...!"
"Focus, Yuuki-kun. Be a man."
She squeezed the base hard and pumped the head.
Schlick-Schlick-SQUEEZE.
Rito roared.
"CUMMING!"
DO-PYU!
He exploded.
A thick, heavy jet of white fluid shot from the tip with the force of a high-pressure hose. It hit the bottom of the beaker with a loud splash.
SPLURT! SPLURT!
The second and third waves followed instantly, filling the glass container rapidly. It foamed and swirled, warm and potent.
"Keep going." Mikado said, her eyes glued to the beaker. "Get it all out."
Rito shuddered, his body convulsing as he milked himself into the glass. The volume was staggering; way more than a normal human should even be capable of producing. The beaker was nearly half full by the time his spasms slowed to a twitch.
"Haah... haaaah..." Rito slumped forward, resting his forehead on Mikado's shoulder, completely spent by the situation.
Mikado held the beaker up to the light, swirling the contents. It was thick, pearlescent, and glowed faintly with a golden hue under the fluorescent lights.
"Incredible…" she murmured. "It's like something super-charged. It's not just DNA... it's pure life force."
She capped the beaker and set it on the counter and then peeled off her gloves with a snap.
"By my professional eye, you're safe, Yuuki-kun." she said, turning back to him. She reached out and ruffled his sweaty hair, her touch surprisingly gentle. "It's potent, but it's not toxic. In fact, it's probably beneficial. It likely boosts their immune systems and accelerates healing."
Rito looked up at her, dazed. "Really? I'm not... hurting them?"
"No," Mikado smiled. "If anything, you're making them stronger."
She handed him a towel.
"Clean up… And Yuuki-kun?"
"Yes?"
"Next time... wear looser pants, you're growing."
*****
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