#10 Scenario - Perfect Couple
The moment she saw the text, several ideas popped into her head, but they were too scary to voice out loud.
"Hmm~."
Meanwhile, the two in front of her had eyes full of interest, pondering what to do next.
The claim that they did this often was absolutely no lie.
"A naughty selfie means... just taking a pic naked, right...?"
That was the naughtiest photo Woo Da-young could imagine.
A nude shot—nothing beyond that came to mind.
Nam Siu and Woo Da-hee exchanged glances at her words, then burst out laughing.
"Pfft-haha!"
"Heheung~!"
Woo Da-young could never guess why they were making those faces.
"What the hell~."
Even she could tell they were teasing her, so she snapped back in annoyance.
"Just 'cause you're cute."
His words made her bristle even more.
"What're you saying."
As she grumbled curtly, her sister approached Nam Siu and wrapped her hand around his still-flaccid—but grotesquely massive—cock, shaking it gently.
Seeing her do that so casually in front of her little sister felt strangely off-putting.
"Gotta get this guy growing, right? Come here."
"......"
Pretending to be reluctant, Woo Da-young stepped closer, her eyes locked on the thickening shaft.
"......It, it really gets bigger......"
Even limp, it had been huge, but watching it swell was fascinating.
Nothing like her boyfriend's cute, lovable one.
Grab.
Suddenly, Nam Siu's hand gripped the back of her head.
"Get closer."
"Huh?"
Woo Da-hee leaned in toward the cock too, planting a light kiss on the bulging vein along the shaft.
"You on the other side."
"Huh? Ugh~. N-no, I don't wanna......"
"Then why'd you play the game? Hurry up~."
Frowning, she still pressed her lips to the opposite side.
It didn't smell weird at all.
Probably from the spa and shower—only the scent of body wash lingered.
Mwah.... How's that? Impressive, huh?
Glancing at her sister's face, Woo Da-young saw pure admiration and affection as she caressed the thing tenderly.
"......It's gross."
To Woo Da-young, it was still just weird.
"Come to the head."
At Nam Siu's command, she moved to the glans, their lips nearly brushing.
The thought of kissing her own sister triggered an instinctive revulsion.
"This is a bit......"
Click.
"Hey!"
She yelled as he snapped a photo mid-moment, but he ignored her.
"Stick your tongue out a little. It's coming out perfect."
"......"
Whatever, she thought, flicking her tongue out to lap at the glans.
Click.
Click.
Several shots fired off.
"Lemme see."
Done shooting, he lowered his phone to show the pics.
The sisters kissing either side of the thick cock—anyone would call it straight-up lewd.
"I-if Woo-hyun sees this......"
Just imagining it had cold sweat beading on her skin.
"Don't worry, I won't show anyone. We'll delete 'em all after the game anyway."
"Oh..., yeah."
True—no sane person would keep pics like that on their phone.
Unless they were a total perv.
"Now, draw for king."
Still naked, they each drew a chopstick.
This time, Woo Da-young drew the king.
"Then......"
The Jenga tower still had plenty of room, so she pulled one out.
[Say something naughty while inserted]
The second she read it, she flung it away like it was a bug.
Thwack!
"Ow."
It nailed Nam Siu right in the head; he clutched it.
"S-sorry."
"What if you just toss it? What'd it say?"
He picked up the fallen Jenga piece, read it, and grinned.
"Come here."
"Huh? W-wait, hold on. That's......"
"You gotta do it to move on."
She hadn't expected the stakes to ramp up this high—her panic doubled.
"Spread your legs."
"Y-you just say that to a friend like it's nothing?"
"What's wrong with it? Friends do stuff like this."
"Normal friends don't......"
No dodging it, so Woo Da-young squeezed her eyes shut and lay back on the floor.
The boiler kept it warm; heat rose from the floorboards.
Swish.
The instant his hand touched her thigh, every hair stood on end; tension gripped her.
"H-ha-eut."
"Just touching and you're already feeling it?"
"I'm not."
Embarrassed, she hid her expression. Ignoring her, he spread her legs and approached.
"Da-hee, lube."
At his words, her sister came over, popped the cap, and squeezed gel onto the throbbing, grotesque shaft.
Squish.
She wrapped her hand softly around it, stroking gently until the gel coated every inch.
Thinking of that going inside made her clasp her hands over her chest in nerves.
'H-how am I supposed to take that thing......'
While she panicked, prep finished; he spread her thighs wide, gripped the base, and rubbed teasingly.
"Hng...."
The hot tip grazing her pussy drew an involuntary moan.
Tension and curiosity turned her head to watch.
Squelch.
"Ha-uk...."
Forcing open her tight folds, the invading fullness made her gasp unwittingly.
"Hau-eung...."
Squelch.
Thanks to the lube, it slid in smoother than expected—bearable, even.
"Uh...?"
Like a well-worn fit, it plunged deep, thump, tapping her cervix—surprisingly painless.
Squelch.
Squelch.
More lube applied, he thrust a few times, naughty sounds spilling from her lips.
"Haaaang...! Ha-eut..., haa...."
The glans stretching and pounding her depths sent chills of pleasure up her spine.
"Ah.... ha-eung! Ha-eut...! S-stop......"
Any more and she'd lose it; she tried to halt him.
"D-don't move... it might be dangerous......"
Her pleading, desperate voice made the cock inside twitch hard.
"Whoa, that was seriously hot just now. Admit it?"
"......W-what're you saying......"
More than that, the fullness filling her focused every nerve—even still.
Moving now? She'd cum without resistance.
"Then say something naughty now."
"......"
At Nam Siu's words, Woo Da-young flushed and turned her head aside.
She couldn't utter dirty talk herself.
"H-how am I supposed to say that."
"Stay like this forever then? Might cum inside."
"Ah! R-right! No condom?!"
Startled, she tried to push him out—but it wouldn't budge.
"It's a game—what's the big deal."
"Th-this as a g-ha-eut! game......?"
Every shove stimulated her sensitive spots inside.
Finally giving up, avoiding his gaze, she muttered.
"H-how do I even say something naughty......"
"Hmm..., Da-hee says it all the time."
If it was what her sister said, maybe she could mimic— she asked for help.
"Unnie......"
Woo Da-hee, watching with glee, leaned in.
"Beg him to cum inside. Like you're desperate. Shivering and all."
"W-what?! That's?!"
How could a sister say that to her own sibling?
"Heung~, or...... yeah, that's good. Say you fuck better than Woo-hyun."
"......"
"It's true, right? No biggie?"
"Y-you've never even seen him......"
Still, badmouthing her boyfriend didn't sit right.
"Heung, wanna try it on you later then?"
Imagining Woo-hyun suffering like her, she shook her head frantically.
"S-Siu fucks way better than Woo-hyun......"
"......Wow, zero soul."
He teased with a playful smirk.
"Th-that's enough, right......! Haaaang!"
As she bristled to retort, he hugged her thighs and started thrusting.
Squelch, squelch.
"Haa-eung! Haang! Ha-uk! Ang...! Haaaang! Ang! Hang!"
The thick cock plunging deep, gliding smoothly out to her entrance then refilling her—her mind reeled.
"Ha-eut! Haaaang! Ang! Ha-eung...! Haang! Aaah...! Ha-eut!"
Squelch.
The final deep press after each thrust made her core throb thump-thump.
Painful and overwhelming, yet familiar somehow.
Like they'd done this a thousand times.
That sense of familiarity melted the pain away, quickly soaking her in sweat.
"Huaa-eung! Ang...! You're insane...! Ha-eut! Ha-eung! Aang!"
By now, it wasn't a game anymore.
"No...! Haang! Pull out now...! Ha-eut! Haaaang! Not inside...!"
"Heung~, dangerous day?"
"N-not that...... but absolutely not...!"
Her teasing sister looked infuriating.
"Da-hee, suck her tits. Not mine."
At his order, Woo Da-hee approached, cupping her massive breasts to roll the already-hard nipple with her tongue.
The mix of chills and disgust from her sister's touch hit hard.
"Unnie, why even youuu...! Haaaang! Ah-eut! Haaaang!"
She wanted to resist, but the deep-thrusting cock pounding her core forced her to bite her lip and endure.
"Huaa-eung! Haang...! Haaaang! Ha-eut! Ha-eung!"