Cheol-gyu, Dad's Coming In
Cheol-gyu Lee's excitement showed no signs of fading. Things he'd never even dreamed of before—like dumping a huge load of cum right into his cousin sister's mouth, then shoving his fingers in to force it open and peer at his own jizz. After pulling off something like that, his blood boiled so fiercely it made his head spin.
Sis... I came in Sis's mouth...!
Sure, he'd accidentally blown his load on his cousin sister's pretty face at the OP once, but that had been a mistake... and so sudden it never felt real. Meeting his cousin sister at an OP in the first place had been a freak accident.
But this was different.
I blackmailed Sis... made her suck my dick for money...!
He'd taken the lead (or so Cheol-gyu thought), paying with cash and a promise to keep her secret in exchange for oral service—a legitimate transaction. Unlike an accident, a deal meant he could do it again anytime the terms lined up. And during the deal, he'd roughly fucked her mouth-pussy, but Sis hadn't put up any real fight, just submitted to him. Maybe because she was scared of getting caught, or because of the money, or because she was too weak... whatever the reasons, the only thing that mattered to Cheol-gyu was one fact.
I fucked Sis's mouth... and she couldn't even resist me.
The thrill of flipping the unspoken family power dynamic made his body tremble. So the thick load of Cheol-gyu's cum filling Yeon-woo Lee's mouth—that was living proof he'd conquered her. A girl who was superior in every way to Cheol-gyu, the loser monkey no one took seriously. A woman he'd never have dared approach if she weren't family...
I crushed Sis under me... made her suck my cock and swallow my cum...!
Conquest, plain and simple. And when he'd asked if she'd swallow it, and after hesitating, she'd squeezed her eyes shut and gulped it down—that's when Cheol-gyu's screw came loose.
"S-Sis...!"
"...Ah, no... stop... "
Despite her feeble protests, the fired-up Cheol-gyu pounced on Yeon-woo again like the horny monkey his nickname suggested, even though she was limp and exhausted like a bitch in heat.
"Take it off...!"
"...!"
The bra he'd roughly yanked down during the mouth-fuck—he grabbed it viciously now and tore it off, flinging it aside. Her tits were already exposed, but now they bounced free without anything in the way. Eyes rolling back, Cheol-gyu ignored her whiny complaints and clamped one hand around the massive slab of flesh that wouldn't even fit in his grip—like gripping a doorknob—and squeezed hard.
Squish! Squish!
Like wringing out laundry.
"Hey...! Ah, it hurts...!"
She writhed in pain—what would've earned him a slap across the face any other time—but she couldn't yell loud enough to risk someone hearing, so she whispered. That whisper, laced with suppressed agony, drove him wild. The faint hint of slutty pleasure seeping into her cries of pain drove him even wilder.
"Haa... haa..."
"St-stop... stop it... haa! Ah, I said it hurts...!"
"Sis, I paid you, didn't I?!"
"Eek!"
"Stay still...!"
He grabbed her slender wrists as she kept trying to push him away, wrapped his other arm around her waist, and yanked her close.
"Come here...! Get on the bed...!"
"Eeek...! W-wait...!"
In a tone he'd never have dared use before, he dragged his cousin sister—who was slumped on the floor—up onto the bed. Like a leopard hauling a gazelle up a tree to leisurely devour it.
In his excitement, Cheol-gyu felt like a beast—or wanted to become one. He flung her onto the bed, climbed on top, pinned her down with his weight—
Squish!
"Hngh...?!"
—and sank his teeth into her pale, soft, plump, perfectly ripe cannonball tits.
Chomp!! Slurp!
No milk since she'd never been pregnant, but he sucked with enough force to draw out dozens of milliliters if there had been. Then he lost it completely, gnawing at the flesh around her areola like he was chewing gum.
"Hngh...!"
Against Cheol-gyu's relentless assault, Yeon-woo could barely think straight. She had to clap her own hand over her mouth to stifle the instinctive moans.
Even though he was smaller than her, he clung like a cicada on a tree trunk—no matter how she thrashed and resisted, she couldn't shake him off.
So.
This little shit Cheol-gyu... sucking on my tits...!
Her pale, soft breasts devoured like they were his to take. She couldn't scream and risk waking Uncle or her little brother... and she didn't have the physical strength to fight him off anyway.
All she could do was bite her lip against the surging humiliation.
"Haa... haa! Sis's tits are so fucking good...!"
And Cheol-gyu... he stretched her soft G-cup udders like taffy, biting and sucking her nipples, overcome with the urge to stamp his mark on that blank white canvas.
Chomp! Smooch! Slurp!
Not just the pink nipples and areolas—he bit and sucked indiscriminately at the milky white skin of her breasts and chest.
"Hngh... eek."
"Heuk... heuk... heuk..."
Once he'd gorged himself to his heart's content, Cheol-gyu looked down at his cousin sister—pinned beneath him, staring helplessly at the ceiling, palm clamped tight over her mouth.
"Sis..."
"...W-what?"
"Suck my dick again."
"...What?! I already did it earlier..."
Yeon-woo's shocked protest didn't get far. The monkey bastard who'd just flooded her mouth with a massive load minutes ago—his cursed cock was already rock-hard again.
Cheol-gyu didn't wait for permission. He shoved his cannon right up to her face and demanded it like a threat.
"F-fucking psycho..."
"C-come on."
"N-no... I did it once already...!"
"I'll pay extra? Come on, suck it."
His eyes fully crazed now, barking demands in a bullying tone. Yeon-woo looked up at her cousin brother with terrified eyes.
This crazy fuck...! How much more is he gonna do?!
Scared she'd be held hostage till dawn, forced to turn her throat into an onahole... she tried to weasel out somehow, but—
"I'll give you 200,000 won more. One more time."
"..."
"300,000—300,000 won!"
Mistaking her stunned silence for negotiation, maybe. But whether misunderstanding or not, Cheol-gyu—out of his mind with boiling lust—took the pause as consent and grabbed her jaw, forcing her mouth open.
"Haek...! Nooo..."
Unlike before, she was fully flat on the bed now. Cheol-gyu thrust his filthy crotch over her sculpture-perfect face, shoved his cock in her mouth, and collapsed on top, crushing her.
"Throat. Milk it with your throat like before."
Already treating his cousin sister's throat like a full-on onahole. Outraged by his attitude, Yeon-woo tried to snap back—but—
"Eub?!?!"
Only a despairing gag escaped her plugged mouth.
True face-fucking. He rammed into her lying mouth and started thrusting wildly on his own.
Treating her throat like a real pussy.
This crazy monkey fucker's raping me again... no...!
No use thinking it—
"Kek... kek... krrgh...!"
Her throat getting reamed once more. With her gullet stuffed full of cock—
"Hngh... hngh..."
—she desperately sucked air through her nose, but it came in ragged bursts. "Puhh... prff...!!" Her lips couldn't seal tight, so spit and air bubbled out humiliatingly.
And the heavy weight of his crotch grinding down, smashing her face—that utter degradation. Trembling at the sensation, Yeon-woo felt her pussy starting to leak, soaking her black panties with slick.
Me... getting wet from this monkey shit...?
That was the most humiliating part...
But that night, Yeon-woo's ordeal was far from over.
"Haa... haa... Sis's throat-pussy is too good... fuck, I'm addicted... haa... haa."
Face-down on her, using her throat like an onahole, babbling nonsense in a trance—then Cheol-gyu's body—
"...?!?"
—froze solid. Whoosh! In frantic panic, he yanked the blanket from the floor and threw it over himself—and the naked body pinned underneath.
Of course, with his dick still buried in Sis's throat.
And just before the blanket covered him—
Knock knock knock!
A light rap echoed at Cheol-gyu's door.
=====
The clock read 1 a.m. already. But Yong-gu Lee—co-director of Miso Women's Hospital and renowned OB-GYN—was still poring over a thick English medical journal under the stand light. His eyes were locked on a paper titled "Utility of HPV DNA Testing in High-Risk Groups for Cervical Intraepithelial Neoplasia (CIN)."
As expected... cytology alone has clear limitations. Especially with HPV types 16 and 18 in young women—the progression is rapid...
Even past fifty, Yong-gu never skimped on late-night research. That was the secret to becoming one of Gangnam's top OB-GYNs. No tiger sires a worthless cub, but his lazy, dim-witted son Cheol-gyu was the stark opposite.
As he finished the paper and moved to the latest on minimally invasive surgery for endometriosis, Yong-gu frowned. Faint mumbling and dull thuds filtered from the living room in the dead of night.
What the...?
He first dismissed it as late-night gaming, but minutes passed and the noises persisted. Cheol-gyu's gruff voice, rhythmic thud! thud! like bumping into something, intermittent moans...
Good grief. Up to all sorts now.
It was August already. The re-taker kid bringing home 3s and 4s on mocks, still not getting his act together—jerking off in his room like a show.
If he hates studying, at least go to bed early...!
The more he thought, the more pity, disappointment, and anger stacked up toward his son.
Knock knock knock!
Of course, with nephew Jin-woo studying and favorite niece Yeon-woo asleep—he knocked softly.
"Ahem... ahem! Cheol-gyu. Dad's coming in."
Worried he might be mid-jerk, he warned with the knock before entering... and sure enough, the kid was shirtless under the blanket at this hour.
"D-Dad?"
"Ahem... what's with all the noise from your room this late? Huh?"
"Ah, uh... s-sorry."
No good excuse, apparently—stammering with a face gone white as a sheet. Yong-gu clicked his tongue inwardly. Just as I thought.
Smell this... ugh. Grown-ass man still acting like a kid...
That panicked reaction to Dad barging in. The rank semen stench filling the room.
Of course, as a doctor, Yong-gu knew jerking off was healthy. But once something rubbed him wrong, nothing pleased him—a strict father's way. Even that grated.
"It's too late. Wrap it up and go to sleep, whatever it is."
Yong-gu had already judged his son and turned for the door—
"Huh...?"
—when he spotted a woman's bra tossed in the corner.