An Excellent Practical Demonstration
- Thud!
“Hnngh?!”
When I drove my hips forward hard, the narrow, scorching inner walls clamped down around my massive pillar without leaving a single gap.
The raw, vivid sensation of flesh meeting flesh directly—no contraception, not even a thin membrane between us.
A groan escaped me involuntarily at that overwhelming tightness and maddening heat, and I wrapped my arms around Teaching Assistant Kim Minjeong's waist and began pumping in earnest.
- Squelch! Squelch-slick! Squelch!
“Ugh…! Pr-professor… haah, hnngh?!”
“Are you all right?”
“Ah, yes… I'm f… haaaah?!”
“You don't seem all right. If it's too much, then we can stop—”
“N-no! It's just, your cock is… hyih! It's too biiig….”
“Ah….”
“J-just give me a moment to adjust, please….”
Half pleading, she slowly began rolling her hips, minutely fine-tuning her position. Each time she did, the plush, premium leather sofa creaked softly beneath us.
Was I really that big? I could certainly guarantee I wasn't small, but I'd never exactly call myself huge either.
I was still wondering whether this, too, was some effect of my rising affection stat when Kim Minjeong's pussy clamped down hard around my cock.
“Nngh…!”
“Ugh…! Haah…. O-okay. I've… accepted your cock now, Professor.”
“The preparation process is… rather complicated, isn't it.”
“I-I'm sorry…. I'm still learning, so there's a lot I'm… lacking. Please, understand with an open mind… I beg you.”
Apparently she'd taken my words as criticism, because she apologized in a timid, careful voice.
It wasn't that at all—I'd been purely impressed by her skill.
Seemed the department that trained living sex toys was no joke after all; her technique, from her mouth down to her pussy, was nothing short of phenomenal.
If I kept dealing with students like her in this department, my cock wasn't going to survive.
I set that happy dilemma aside for later and decided to enjoy the delicious dish served up in front of me right now.
“It's fine. Then let's proceed straight to the practical exercise.”
“Yes, Professor…. Hnngh?!”
I lifted her legs and hooked her thighs firmly around my waist.
- SLAM!
“Hnnghhh?!”
“I'm not stopping anymore—here I go!”
I rammed into her ruthlessly, as if determined to bottom out in one stroke.
Every time I moved my hips like a beast in heat, the two plush breasts spilling out from between the buttons of her white shirt bounced shamelessly without mercy.
The nipple piercings hanging from her pink buds jingled and clinked against each other, their sound mingling with the sticky friction of flesh until it filled the entire office.
- Squealch-squealch, squelch…. squealch!!
“Hnngh… ah, ahh…! Haah-aaang…!”
“Ugh, good. Your insides are… exquisite.”
“Professor… hah, ah, aaahhh…! Professooor…!!”
Wow, this is insane. So this is what a Saul University TA's professional competence looks like?
It went beyond simply being tight—her pussy felt like a living creature, licking and sucking at my glans on its own.
Her moans, unlike the ones in porn, had a distinctly stiff, awkward quality to them.
But that only created a strange synergy with the clinging wetness of her pussy and made it even hotter.
Best of all, with zero real-world risks like pregnancy or STIs, I could use my cock with total peace of mind.
So this is what they call consequence-free pleasure.
Of course, I'd still have responsibilities as a professor, so it wasn't literally consequence-free—but the pleasure gained far outweighed the burdens carried, which made it a profitable trade by any measure.
“Nngh…. By the way, your professional competence is truly remarkable. You're incredibly tight and hot in there.”
“Th-thank you… hnngh… that's because y-you, Professor… you're so good at this… hnngh!”
“Are you all right?”
“I'm okay… it's just, my pussy is… tingling so much… I can barely think straight… hyiyyyng…! I-I'm sorry.”
“Not at all. For my personal TA to give such a superb practical demonstration—I've been truly blessed.”
“Haah… hnngh…. Professooor….”
At my sly, blatant praise, far from being embarrassed, Kim Minjeong actually lit up with pleasure and spread her legs even wider of her own accord.
My, my. To think such a prim, buttoned-up department TA was spreading her legs for me and moaning about how good it felt.
The perfect synergy of my blind-affection passive and this department's utterly depraved common sense pulled an involuntary smile across my face.
And I wanted to take it a step further, right now.
Just then, she too was writhing her hips like a bitch in heat desperate to earn a better evaluation from me, struggling to swallow my cock all the way to her deepest depths.
I buried my nose in the nape of her neck, inhaled her fresh fragrance, and hammered my hips hard for a good long while.
But finishing in just this one position felt like a bit of a waste.
I pulled my pillar slickly out of her panting depths.
- Schlooop….
“Ahh…? Pr-professor…? Are you already done…?”
“N-no. It's nothing like that.”
Startled by the sudden loss of warmth, Kim Minjeong squeezed her legs together in disappointment and looked up at me with anxious, yearning eyes.
From her reddened pussy lips, clear nectar welled and dripped down onto the sofa, drop by drop.
With an easy smile, I took her wrist and pulled her upright.
“The previous exercise confirmed your warm-up and fundamentals. This time, I'd like to change the practical environment somewhat and assess your applied abilities.”
“Ahh… yees, Professooor….”
“Then would you follow me?”
“Yes….”
Supporting the wobbly-legged woman like helping a drunk friend home, I walked her toward the massive, solid wood desk sitting at the center of the office.
This was the very spot where, until just moments ago, I'd been sitting and shuffling through student paperwork.
Bending the department TA over it and stuffing her full of cock—wasn't this literally an office drama come to life?
I pressed Kim Minjeong's upper body flat down onto the cold hardwood surface, gripped her waist, and made her hoist her hips up and back.
“Haah, i-it's cold….”
“Hold the position, TA. It's absolutely perfect.”
Her crisp office-lady skirt was flipped up entirely over her hips, and even her damp panties had been pushed aside.
Her upper body bent across the desk, only her ass jutting back toward me—that humiliating, depravity-soaked pose filled my entire field of vision.
Plump, bare white cheeks with nothing left to hide them, and between them the reddened slit glistening with nectar.
Mm. There was absolutely no holding back now.
Swallowing hard, I gripped her hips firmly in both hands and drove my cock into her from behind, ramming it to the hilt in one merciless thrust.
- SCHLAP!!
“HIIIIK?! Hnngh, haah-aaahhh…!!”
Whether it was the shock of being speared through from behind like a beast, a tearing cry burst from Kim Minjeong's lips.
There was no denying that I'd buried myself far deeper than before, past any comparison.
And as a result, the place where my glans pressed against felt different from earlier—clenching down hard, like forcing through something cinched tight by a rubber ring.
Was this the cervix thing you only heard about in dirty rumors?
I couldn't say for sure, but either way it felt incredible, so gripping her hips in both hands, I began pistoning faster and rougher than ever before.
- Slap! Squelch! Slap! Squealch!
“Hngh?! Haah, hnngh…. Hnnn?! Haaahh…!!”
The vulgar music of flesh slapping against flesh began to fill the quiet office.
Every time I drove my hips up hard, her breasts, pressed against the desk, dragged back and forth across the cold hardwood.
Each time, the nipple piercings caught on the desk's surface and rattled against the wood,
and whenever the silver rings snagged on something and tugged at her nipples, sharp screams spilled out of her mouth.
“Hiiyah…! Ah, that hurts… haah! My pussy and… my nipples are… tingling sooo much…!”
“TA, aren't you being too loud? What if someone outside hears you?”
“Haaaahng! It's f-fine if they hear…! I-I'm the department TA after aaall… haah-hnngh!”
“Well, if you say so.”
The composed, intellectual department TA of ordinary hours was nowhere to be found.
She now kept her ass thrust all the way back, shrieking out filthy noises like a bitch whose brain had melted entirely under the pleasure of my cock ramming into her.
It was definitely a good look.
Apparently the department really did educate its students, because whereas her moans earlier had been nothing but crude gasps, now obscene words came pouring out of her mouth as well.
Which meant my hands, clamped around her hips, tightened all on their own.
“Haah, this is driving me crazy. Your insides grip me so tight I feel like I'm about to lose it, TA.”
“Ah, aaahh…! Cu-cum for meee…! Professor, I-I'm close too, I'm gonna cum first, I'm gonna—haaah!”
As the savage pistoning reached its limit, a taut, explosive pressure surged up from my groin, on the very edge of bursting.
Kim Minjeong too threw her head back and shuddered violently, then her vaginal walls began convulsing madly, clamping down as if to swallow my glans whole.
A flawless contraceptive system with no risk of pregnancy. Yes. There wasn't a single reason left to hold back.
With one final yank of her hips toward me, I slammed my pillar down into her deepest depths with all my strength.
- SCHLUP!!
“Brace yourself. I'm dumping everything inside…!”
“Y-yeess…!”
- Bbluurrrgh! Bblurgh! Blop!
“Haaaahng…?! Ahhh, it's h-hot, it's sooo hot…!”
With a sensation so intense my mind went blank white for an instant, I began unloading an enormous volume of semen deep into her core.
Like a dam that had been held back for ages bursting open, the hot, thick liquid surged up along my throbbing cock and flooded into her without pause.
Kim Minjeong, too, must have felt the fire of my cum pouring into her depths, because she trembled uncontrollably.
Her narrow inner walls squeezed and milked my glans like mad, extorting even the final drop of seed without remainder—
“Haah… haah….”
“Hnnngh… ahh… my belly'ss… so full and warm….”
—and finally, seemingly satisfied, she went limp and released my cock.
When the long, intense climax ended, only ragged breathing and the briny scent of night flowers vibrated through the office.
With a satisfied smile, I brought my palm down hard across her sweat-slicked, glistening bare ass with a resounding crack.
- SLAP!
“Ahh…!”
“That was an excellent practical demonstration, TA. Thanks to you, I now understand our department's system perfectly.”
“Th-thank you…. I'm just glad… I could be of help…♡”
“Good. Then—”
I slickly drew my spent, limp cock out of her pussy.
The moment my equipment slipped free, the white semen I'd pumped into her came oozing back out of the reddened, swollen hole, mixed with her nectar, trailing down in a slow stream.
Truly a magnificent sight, no other word for it.
I watched the spectacle with a contented grin, then wiped myself off with a wet wipe sitting on the office desk.
I did briefly consider making her clean me up with her mouth, but I figured if I did, I wouldn't be able to resist going for another round.
There were plenty of women left to ravish going forward—I couldn't afford to waste my energy here.
To make it unmistakably clear that this was where we stopped, I zipped up my trousers and, leaning casually against the desk, spoke in an even voice to Kim Minjeong, who was still catching her breath against it.
“You may go now, TA.”
“Ah, yes…. Then, the clean-up—”
“I have some work of my own to finish, so I'll pass this time.”
“Ah, in that case…. I'll take my leave then, Professor….”
Still dribbling semen down between her legs, she wobbled to her feet, pulled down her upturned skirt, and straightened her disheveled clothes.
With her face red as a tomato, she left a pristine bow, then scurried out of the office on careful, hurried steps.
- Click.
The door shut, and the spacious office was once again left to me alone.
The briny scent of semen still mingled with her sweet perfume, drifting in the air.
Sinking deep into the plush premium leather chair, I began slowly leafing through the file folders Kim Minjeong had left behind moments ago.
Good. I've got a rough picture now.
Through sex with her, I'd managed to grasp the rules of this world's setting to a fair extent.
Unlimited sexual authority granted under the pretext of Overtime Practical Class.
A perfect contraceptive system with zero worry of pregnancy or disease.
Even outdoor exhibitionism or group practical sessions could pass legally with nothing more than a single sheet of paperwork.
Within this Special Devotion Talent Department, the power wielded by a mere assistant professor like me was considerable.
True, using that power on anyone but my own assigned personal students involved all sorts of tedious procedures.
But the target I had my eye on was already handpicked as my personal student.
My gaze came to a stop on one of the student profile documents laid in the corner of the desk.
In the photo, a girl with heavy smoky makeup glared at the camera, head tilted at a insolent angle.
Baek Nahee.
The arrogant, stuck-up delinquent queen bee from high school who'd worked me as her bread-shuttle errand boy and looked at me like I was a bug.
The memory of that face—the one that had hurled a slab of pork belly at mine and slapped me across the cheek not long ago—made my expression harden before I knew it.
Overtime Practical Class has no particular restrictions, and whatever I do counts as education. That's what she said.
In that case, the whole story changes.
Frankly, I had no intention of simply turning Baek Nahee into a living sex toy to sate my desires and calling it done.
She was the very architect of my public humiliation—the one who'd overcome the affection-leveling anomaly hanging over me and ground my face into the dirt. Ending things with such a boring finish would be a waste, wouldn't it?
I was going to blast that petty pride and ego of hers clear down to the bedrock, and then, pickled in shame, make her crawl at my feet wagging her tail on her own.
“Nahee, you're in for it now. Just you wait.”
Murmuring that, I snorted a laugh.
My university life ahead as a professor was going to be genuinely entertaining.