Secret Lesson
CHAPTER_TITLE
In modern magic society, power is determined solely by the magnitude of one's mana.
Arcadia Academy, situated in the heart of Daechi-dong, South Korea, stood at the very pinnacle of that power.
"The reverse flow of mana is not a limitation of the body. It is merely a bottleneck born of incorrect formula calculations."
Park Juhyeok's heavy voice filled the grand lecture hall.
He was the academy's youngest chief professor — the most popular instructor on campus, who held his students in thrall with flawless charisma. His cold gaze and perfectly tailored suit made him the object of every female student's longing.
Over a hundred children of the privileged elite stared up at him, not daring even to breathe. When Juhyeok's dark eyes swept the room, even the haughtiest chaebol heirs averted their gazes and swallowed hard.
"It seems many of you still fail to grasp this through theory alone. Baek Sia. Explain the error in Formula Three."
At Juhyeok's call, Baek Sia — top student of the Physical Arts Department — rose from her seat on the diagonal. A tanned influencer hot girl with an F-cup chest that looked ready to burst, she stood with her school uniform skirt cut daringly short, flaunting the curve of her hips.
"I don't really know~?"
Sia smiled boldly and twisted her thighs together toward Juhyeok. Desperate for his attention, she had already slipped open the front of her uniform shirt, the white lace of her bra brazenly visible in the deep valley of her cleavage.
Juhyeok ignored her exposure completely, his gaze ice-cold.
"Your classroom attitude is unacceptable. Points deducted. Sit down."
"Aww, Professor, aren't you being a little too cold? Just look the other way this once~"
Sia pouted with a nasal baby-talk whine, but Juhyeok had already withdrawn his gaze. An iron wall that wouldn't spare so much as a glance even when the prideful queen of Physical Arts tried to seduce him outright. That very abstinence and coldness only sent his popularity soaring among the student body.
"That concludes today's lecture."
After class, Juhyeok's eyes settled on a girl sitting perfectly upright in the front row.
Han Suyeon — Arcadia Academy's undisputed number one. Straight black hair like polished ebony, skin pale as white jade, the perfect elite. The buttons of her neatly fastened uniform blouse strained over the full line of her E-cup chest.
"Han Suyeon."
At his call, her shoulders flinched almost imperceptibly.
"Yes, Professor."
"Remain behind and follow me to my lab. It is time for your regular mana tuning."
Every gaze in the lecture hall snapped to Suyeon at once. Most of them were looks of envy, assuming this was special elite management from the professor for the top student. But on Suyeon's pale face, a strange terror and a peculiar heat were spreading side by side.
"Yes. Understood."
Suyeon forced her trembling legs still and gathered her things.
Outwardly, Park Juhyeok was a cold, intellectual, and popular teacher. But the only ones at this academy who knew his true nature were the female students who had become subjects of his management.
Click. Clunk. Whirrr.
The door to Park Juhyeok's private lab opened, and as they stepped inside, the triple-layer mana shielding system activated with a low hum. From this moment on, everything that happened in this room was sealed in absolute secrecy.
The air — a mix of disinfectant and a distinctive, heavy male scent — stabbed into Suyeon's lungs. The instant the soundproof door shut, the gentle, ascetic teacher's mask he wore before the students vanished without a trace.
He dropped onto the luxury leather sofa in the center of the room, roughly loosened his tie, and looked up at her.
"What are you standing around for? Strip."
"P-Professor. My mana levels are relatively stable today. We don't necessarily need full-body access—"
Suyeon clutched the hem of her uniform skirt and pleaded pitifully. There was no trace left of the proud, sharp number-one student she usually was.
"Han Suyeon. I can see mana residue building up deep inside your womb, and you call that stable?"
"Uuuh…"
Behind the scenes, Juhyeok was conducting illicit private tutoring — forcibly amplifying students' mana in exchange for massive illegal funds. The parents simply believed he possessed some special acupuncture technique or mana massage secret, and they poured tens of billions of won into him.
Suyeon's mother, Chairwoman Seo Jiwon, likewise paid him astronomical sums to keep her daughter at the top. But the true secret of that mana amplification was something else entirely.
Park Juhyeok's semen.
When absorbed into the body, his semen acted like a specialized elixir that explosively accelerated mana circulation and dramatically amplified magical power. The parents had no idea their precious daughters were being reduced to semen receptacles and living flesh toys for Juhyeok — they simply kept handing over the money.
"If I don't dig deep inside you myself and fill you with semen, you'll go mad from magic runaway."
Juhyeok smirked and leaned back against the sofa.
"Or you can leave. I'll simply tell your mother, the Chairwoman, that your magic circuits are damaged and I can no longer continue the tuning — and process a full refund. She's depositing a billion won into my account every month. I'm sure she'll be delighted to hear you refused."
Suyeon could find no words of rebuttal; her lips only trembled. Betraying her family's honor and her mother's expectations was a terror worse than death.
"N-No! I'll strip. I'll take everything off, Professor."
With shaking hands, Suyeon began undoing the buttons of her uniform blouse one by one. With each button released, pure white skin that had been tightly confined came into view. When she let the blouse slip from her shoulders, an elegant white lace bra appeared.
Her full E-cup breasts. Lewd mounds of flesh swelled appetizingly over the cups; fine down trembled across the flawless pale skin of a noble young lady.
Tears of shame welling in her eyes, Suyeon lowered the zipper of her checkered skirt. With a soft rustle the skirt fell to the floor, leaving her in nothing but a white triangle of panties. Completely bare, she stood at Juhyeok's feet.
"Panties too. That thing inside is already so excited it's drooling tears—what's the point of covering it?"
Suyeon bit her lip hard enough to draw blood before she finally hooked both hands into the waistband. As she slowly pushed the panties down her thighs, a pretty pink sex, smooth and hairless, was exposed to the open air. Her shameful pussy was already leaking clear love juices, completely at odds with her rational mind. Viscous fluid slid down the insides of her thighs, proving her lewdness.
"Outside you act so cold and distant, yet the second you step into my lab you're nothing but a vulgar whore. Your mouth says no, but your cunt is already drooling for my semen."
Juhyeok rose and stepped in front of her. His massive frame completely swallowed her in shadow. Overwhelmed by the scent of raw male and by terror, Suyeon's legs gave out and she sank onto the leather sofa.
"Pull your ass back and spread yourself open with your own hands. I'll make you see clearly just how filthy you are."
Like a brainwashed doll, Suyeon braced herself against the sofa back, bent forward, and raised her hips. With trembling hands she reached behind and pulled her labia wide apart. The flower-petal membranes, flushed red, were perfectly exposed before Juhyeok's eyes. At their center the vaginal entrance fluttered lewdly, endlessly spitting love juices.
Juhyeok squeezed a generous amount of special mana gel onto his fingers from the bottle on the table. Without any warning he drove his middle finger straight through her entrance.
"Haaang! Ahht! P-Professor, your finger is too deep…! Ah!"
Without mercy he stirred his finger, scraping roughly along her inner walls. Precise bombardment aimed exactly at the G-spot and cervix where her mana nodes clustered densely.
"How is it, Han Suyeon? Feel those clogged mana circuits opening up nice and clear? You're not receiving magic tuning right now. You're learning how to mate like a bitch on my fingers."
"No! I'm the top student of Arcadia… Haaang! Aaaaah! Professor! Th-There… Ooh!"
He shoved a second finger in and began scissoring her open. Long strings of drool spilled from Suyeon's mouth as idiot-like moans burst free; finally her reason collapsed completely and her body arched like a bow.
"Kyaaaaaaaang! I'm cumming! I'm cumminggg!"
Convulsing down to her toes, Suyeon gushed a massive fountain. Clear love juices sprayed in every direction, soaking the leather sofa.
"My real elixir hasn't even gone in yet and you're already finished? That won't do."
When he yanked his fingers free, white juices poured out of her narrow hole with a wet glug.
Ziiip.
Next Juhyeok lowered his zipper and freed his massive cock. Veins bulged thickly along its length—a twenty-centimeter weapon that looked like a living beast. Through tear-blurred vision Suyeon confirmed that overwhelming size and trembled.
"Take it in your mouth and clean it thoroughly. This is the ritual before mana injection."
Trembling, Suyeon dropped to her knees and crawled to his crotch. Carefully she took the huge weapon between parted lips. As she rolled her tongue over the glans, the look in her eyes already belonged to a bitch who had forgotten shame.
Juhyeok stroked her cheek, then roughly seized the back of her head.
"Suck it like the slut you are."
He slammed his cock mercilessly down her throat.
"Uuph! Ghk! Ugek! Kek!"
Tears streamed from Suyeon's eyes, but Juhyeok did not stop. Using her throat as a meat hole, he thrust his hips upward without mercy until she choked and gasped for air. At last he pulled the saliva-glossed cock free, grabbed her hair, and forced her face-down on the sofa again. Panting, she raised her hips into the perfect doggy-style position.
"Spread. Today you'll pay the full price for the tens of billions your precious mother offered. I'll brand the size of my cock and the taste of my semen into your body."
Juhyeok gripped her hips hard and set the head against her flushed entrance. Then, with a single merciless thrust, he drove his hips forward.
"Kyaaaaaaaaaaaah! Professor's cock! It's piercing my womb!"
A scream that barely sounded human tore from Suyeon's throat. His massive shaft forced its way into her narrow walls as if ripping them apart, brutally spearing all the way to her uterine entrance until her lower belly bulged outward.
"Khh, the squeeze is insane. Your cunt muscles are trying to chew my cock off."
"Haaang! I'm sorry! My belly feels like it's splitting… Aang! Aaaaaah!"
Thwack! Thud! Thud! Thud!
Juhyeok's merciless pistoning. The wet slap of flesh on flesh filled the lab. Whatever elite pride had remained in Suyeon's mind was crushed formless under his cock.
"Feel it? Mana rising as I press it in deep? Your mother would be so proud if she saw this. Her daughter claimed she was getting special tutoring, yet inside she's just getting skewered on her teacher's cock and screaming."
"Haaang! Never tell Mother… Ah! Pound me harder! Fill my womb tight with Professor's cock!"
Suyeon howled like a beast, greedily sucking his shaft deeper. Every time he pulled almost free and slammed back in, her inner walls inverted with a filthy wet sound.
"Once that cunt gets reamed, all the suppressed mana explodes out. You've become a body that can never use magic again without my cock juice for the rest of your life."
"Yesss! I'll live only on Professor's cock juice! Please shove it deeper!"
Juhyeok pinched and twisted her nipples while ramping the pistoning to the absolute limit. Every thrust made Suyeon spray love juices in every direction in a continuous fountain show. Her entire body flushed red and convulsed under the dual overload of mana and pleasure.
"I'll shove the finest elixir deep into your womb."
On the final spurt he crushed her hips in his grip and sealed the head perfectly against her cervical mouth.
"Aang! Cum inside me! Fill my pussy full… cum enough to get me pregnant!"
Brrrrrrrt! Brrrt!
Hot, thick semen poured into Suyeon's womb like a waterfall. Her lower belly pulsed as it received every drop of that heat. Concentrated mana rode the semen into the uterine lining and vast energy flooded through her body. Eyes rolled back, tongue lolling, Suyeon convulsed in climax.
"Hiaaaaaaaaaang! It's so hot! Professor's cock juice is burning up my insides!"
Juhyeok wrung out every last drop inside her. Suyeon's legs completely gave out and she collapsed onto the sofa. When he pulled free, white semen gushed from her stretched hole. Watching that filthy, dripping spectacle, Juhyeok caught his breath.
"Aaaah, mana… more mana…!"
Face-down on the floor, Suyeon scraped the semen flowing from her pussy with her fingers and licked it into her mouth—an elite who refused to waste even a single drop of mana, lapping up the cock juice that had spilled onto the floor.
Juhyeok looked down at the sight and smiled.
"Today's lesson ends here. Review with your fingers whenever you have time."