Foursome Sex Lecture
The screen crackled with a brief burst of static, then suddenly brightened.
On screen, the Professor stood beside a large, masked man. She lifted her glasses with a bright, cheerful voice.
"Yes, everyone! You all diligently submitted last week's assignment, right?"
"I didn't even know this myself, but the academic regulations suddenly changed — now if you fail to submit even a single assignment, you get an F for the course."
"Even as a professor, I thought that might be a bit harsh... but then again!"
"Considering your poor classroom attitudes, maybe we do need rules this strict~"
The entire time she spoke, she casually kneaded and fondled the large man's balls beside her as if it were the most natural thing in the world.
The masked man seemed slightly uncomfortable with it. He shuffled backward, trying to step off-screen — but the moment the Professor shot him a sharp look, he flinched and froze in place.
She kept stroking the young man's cock with the easy, fluid familiarity of someone handling her boyfriend's, and continued talking.
"Well, no matter how I look at it, the rule is still a bit much, so I've decided to add an extra grace period to the assignment deadline."
"So if you didn't submit last week's assignment, make sure you get it in by the end of this week, okay? Don't put it off if you can help it — just submit it promptly. Got it?"
"Alright then, shall we start this week's class? This week's topic is... group orgy sex!"
She clapped for herself — clap, clap, clap — then crooked a finger toward someone off-screen.
Two women in nothing but underwear slipped into frame, moving with hesitant little steps.
One was a long-haired black beauty with enormous breasts — Hayeon, the housekeeper who had appeared in a previous class. The other was a woman Jihyun had never seen before.
She had a short bob and a cute face. Her breasts were only moderate, but her overall slim build made her figure stand out sharply.
The unfamiliar woman smiled softly and leaned her body lightly against the man.
"...Mmm..."
Watching through the Zoom screen, Jihyun felt an inexplicable irritation. She frowned and pouted.
...No matter how I look at it, that male assistant looks just like Jihoon... But there's no way, right? What kind of class has a student working as the teaching assistant...
While Jihyun was thinking that, the Professor on screen kept talking.
"...Originally, this week's class was planned around having two or more couples gather for swapping sex. Unfortunately, our section only has one man."
"So naturally, this week's class became a threesome and foursome lesson instead."
"It's a shame we can't do swapping, but learning threesome and foursome sex will still be a huge help later when you want to try special play with a boyfriend. So don't skip out — let's learn hard, okay? Fighting!"
She waved her hand in a signal to the male assistant behind her and the two housekeepers.
The bare, muscular male assistant shuffled awkwardly over and lay down on the bed.
The two maids immediately descended on his cock, each taking a side, and began slowly licking from the base of the shaft all the way to the tip.
Slurp... slurp... slurp...
At the same time, the Professor climbed right on top of him for everyone to see, grinding her pussy against his chest as she kissed him.
"Mmh... smooch... ah... nngh..."
"Ohh... hah... ah... mmph..."
From beneath the mask, the male assistant let out low, rapturous moans.
And somehow, watching that scene, Jihyun felt herself getting wet too.
...Tch, damn it... I keep thinking about Jihoon without meaning to...! Who the hell even is that male assistant? He looks way too much like him...
For a long while the three of them rotated roles — two working his cock while the third handled the kissing.
Of course, they didn't do the exact same thing every time. There were little variations.
When the new housekeeper kissed him, for instance, she stared at him like she wanted to devour him whole, thrusting her tongue nearly down his throat and sucking hard.
"Mmphh...!! Hngh...! Ghk...!! Kuh... mmph... brrhhh..."
"Gulp, gulp... glug... gulp... hah... slurp... That was delicious, heehee..."
The cute-faced girl whispered it right against his ear with a lewd smile that didn't match her looks at all — and somehow that made it look even filthier.
When the Professor took her turn giving head, she showed the skill of someone who'd clearly practiced at home with a dildo, expertly taking his cock all the way into her throat and shaking her head side to side in big, sweeping motions.
"Ohh...! Oh, ohhh... kuhh..."
Meanwhile, down at the bottom, the housekeeper Hayeon had her tongue buried in the male assistant's ass, licking him out with dedicated fervor.
The new housekeeper was kissing his lips while she herself was kissing the filthiest hole of all — and her expression was equal parts miserable and ecstatic.
...Last time during the NTR play she looked genuinely happy too. What a weird kink...
Jihyun thought, shaking her head.
But for a while now her hand had been unconsciously groping between her legs. She was rubbing her soaked pussy through her clothes before she finally noticed, startled, and yanked her hand away.
"Ah, shit... I'm losing it. What am I doing, watching class like this..."
Jihyun muttered, face flushed, her voice mixed with a sigh.
But she couldn't help it. This class was a class in name only — it was basically just watching porn.
And on top of that, the male assistant looked so much like Jihoon that she kept finding herself imagining being in that situation with him, doing those things.
After fighting her own reason for a long time, Jihyun finally surrendered to instinct and slipped her hand into her panties.
She was alone in her studio apartment anyway — no one was watching — but she still felt embarrassed enough to glance quickly around the room.
"...Hah, shit... Just get it over with..."
This wasn't even the first time she'd masturbated during class. Surprisingly, Jihyun had been getting herself off while watching ever since the male assistant had changed.
Squelch... squelch... squelch... squelch...
"Haa... hah... ah... ahn..."
Staring at the screen full of bare skin, Jihyun spread her legs wide and rubbed her soaked clit up and down.
On screen, the male assistant finally seemed unable to hold back his climax. His thigh muscles twitched and spasmed as he prepared to cum.
The Professor quickly called the other two women over, and all three of them pressed their tongues together at once, lapping and stimulating the tip of his glans.
Slurp-slurp-slurp-slurp-slurp...
"Haaa...! Ah! Oh!! Ahhh!! Kuhhhh...!!"
At last the male assistant couldn't hold it. He came hard, thick yellowish cum shooting so forcefully it nearly left the frame before spattering back down.
The Professor and the two women, faces and hair completely coated in semen, worked their lips and sucked down every last drop still dribbling from the tip of his glans.
"Nngh...!! Ahh...! Ohhh... kuhh..."
Around then, the Professor turned her head back toward the camera.
"...You all saw that, right? When you're enjoying one-on-many sex like this, you absolutely have to rotate the roles. Otherwise the women can end up with hurt feelings."
"Alright, foreplay's over — shall we get into the main event..."
She rolled a red condom onto his still-hard cock, flicked her cum-soaked hair back, and climbed onto his hips.
Apparently preferring the back door, she pushed his cock deep into her ass with a long, ecstatic smile.
"Haaa... so good... so deep..."
The other two housekeepers moved into their prepared positions with practiced ease.
The cute-faced maid spread her legs wide and straddled the male assistant's face, grinding her pussy against his mouth.
"Hngh... hah... slurp... smooch... mmph... delicious..."
"Ufufu... Is my pussy juice that tasty? Here, open your mouth and I'll feed it to you directly. Aaah~"
The male assistant opened his mouth eagerly, and the cute new housekeeper let her yellowish love juices drip straight into it in a steady stream.
Meanwhile Hayeon — the Professor's secretary and housekeeper — rested her enormous breasts on the man's hands and left them there for him to knead however he liked, while she diligently sucked on his nipples.
"Suuuck... suck... suuuck... hah, lick-lick..."
Slap! Slap! Slap! Slap! Slap! Slap!
"Ahn... ahn... I hate it, juice keeps coming out... Do I have to drink it all?"
The male assistant was so lost in ecstasy that he nearly let the mask slip off several times without noticing. The housekeeper only just managed to pull it back into place right before his face was fully exposed.
And through all of that, another climax was clearly boiling up again — his heavy pair of balls shuddered and twitched hard.
"Haa, haa, haa, haa...! I'm cumming...! Cumming, I'm gonna cum...! Ohh...! Ohh..."
While the Professor groped her own breasts and let out moans of pure rapture, the male assistant finally came, his entire set of abs convulsing in waves.
His hands clamped down on Hayeon's breasts hard enough to tear them, and at the same time he had his mouth full of the cute housekeeper's pussy right in front of his face.
"Aahn...! Biting my clit with your teeth hurts... heehee..."
Feeling his cock twitch and throb violently inside her ass, the Professor rolled her hips up, down, left, and right in big motions, milking him so every last drop of cum could shoot out cleanly.
Watching it all, Jihyun came too from the stimulation on her clit. Her entire labia clenched and unclenched over and over like an abalone dropped into boiling water.
"Haaah...! Hah, haa... ah... fuu..."
As always after finishing, Jihyun sank into a pleasant, empty high, sprawled in her chair without even wiping the love juices still dripping from her pussy.
When she finally came back to her senses and looked at the screen again, class was already over.
"...So what was this week's assignment again... Whatever. I'll just ask Jihoon later..."
She carefully wiped the sticky trails of juice from her pussy folds with a tissue.
