Chapter 15
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Translator: Ebonarch
Chapter: 15
Chapter Title: Chapter 15 - 누나와 함께 자위
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Translator: Ebonarch
Chapter: 15
Chapter Title: Masturbating with Sis
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Late that evening, Sis came home.
With the winner's trophy in hand.
"Ha~. There's no place like home."
She dragged me straight to her room.
"Even hotels get old if you stay too long."
Sis started changing right in front of me, carefree as always.
It had become completely routine by now.
I turned to face the wall again.
"Sis, congrats on the win."
It had been ages since her last victory.
She'd been in a long slump lately.
She never said it out loud, but the stress must've been eating at her.
Because of that, Sis was in a rare good mood today.
"Sun-hu, anything you want? Like a car or a watch?"
"Nah, nothing."
"Really? Tell me now, and I'll buy it. No take-backs later."
"I'm just happy you won, Sis."
"Oh? Look at you, saying cute stuff."
Sis, now in her slip, locked me in a headlock.
My face smashed right into her chest.
It felt almost deliberate, like she was pressing it there...
"Time! I surrender!"
I slapped her arm and yelled to finally break free.
To be honest, it was more embarrassing than painful.
Sis's casual touchy-feely stuff wasn't new.
But ever since that day our relationship turned weird, I couldn't stop noticing.
"Smartphone."
Sis sat on the bed and held out her hand to me.
"Why the phone?"
"Said I'd check it, remember?"
Right.
Sis was suspicious of things between me and Mi-so.
She'd made me swear before heading to the tournament.
I hesitated before placing the phone in her hand.
Sis fiddled with it and pulled up the chat with Mi-so.
There were even more one-sided messages from Mi-so below that.
Anyone looking would think I was straight-up ignoring her.
"Hmm."
Sis smiled, looking satisfied.
"Looks like you kept your promise properly."
"...Yeah."
The truth was, no.
Those were fake messages Mi-so sent just to fool Sis.
Our real chats happened on a different app.
A secret one, just for me and Mi-so.
I'd hidden it well—no way Sis would find it.
I did feel a pang of guilt for deceiving her.
But... Mi-so was just as precious to me as Sis.
If she'd backed off like Sis wanted, like she promised.
I would've let go without a second thought.
But Mi-so kept pushing closer, no matter what.
Even if it meant quitting her idol gig.
I didn't know if that was bravado or the real deal.
But her sadness? That was genuine.
...Sorry, Sis.
I don't think I can keep that promise.
"Well then, time for a reward for the good boy."
"Reward? I told you, I don't need one."
"Not that kind of thing."
Sis hooked a finger into the chest of her slip and tugged.
Cleavage flashed, along with a glimpse of pale breast.
I whipped my head away.
"What're you thinking about right now?"
"...Nothing."
"Liar."
Sis grinned playfully.
Heat rushed to my face.
Why did she have to tease like this?
"Jin Sun-hu. Do it here today."
"...Do what?"
"Jerk off. Right in front of me."
...I'd braced for something like using her panties again.
But Sis always went way beyond what I expected.
I wanted to say no, but I was too flustered to speak.
"N-No, uh, Sis, that's a bit..."
"But only you'd be embarrassed. So..."
Sis slipped the straps off her shoulders.
The nightie slid down naturally, baring her upper body completely.
Her breasts spilled free, dark pink areolas and nipples included.
"I'll show you mine too. You just stand there, watch Sis, and do it."
I turned my head away.
This had to stop.
It felt like stepping over a line we could never uncross.
"...I'm, uh, heading back to my room."
I started for the door.
Then Sis's mocking voice stabbed my back.
"You sure? Think about what I'll do if you leave this room."
"...Sis."
"Go ahead and test it if you're curious. But Mom'll be heartbroken?"
My grip slackened on the doorknob.
"...Why, Sis."
"Hm?"
"Why do you keep doing this to me? You could have anyone you wanted."
Looks, money, skills, fame.
Young, future brighter than the sun.
Sis lacked for nothing.
So why? Why me?
Sis just tilted her head, like I was the weird one.
"Plenty of guys out there in the world. But only one little bro—you."
"..."
Her words were vague.
But somehow, I got what she meant.
All the tangled feelings I had for Mom, Sis, Mi-so.
Swap 'em for any other girl? Nothing.
Maybe Sis felt the exact same.
I let go of the knob and turned back to her.
Sis watched me with total confidence.
Like defying her was impossible.
My gaze dropped to her breasts.
As big as Mom's.
But Sis had youth as her secret weapon.
Firmer, healthier.
Nipples brighter, prettier.
I swallowed hard.
"Finally got interested? Hm?"
Sis teased, cupping her tits with both hands.
The perfect mounds shifted shape with every move.
I knew I shouldn't stare, but my eyes were locked.
I squeezed them shut.
"Sis, cut it out."
"Hehe. Blushing already? Your turn—strip."
Still, I hesitated.
But deep down, no escaping her now.
Fumbling, I dropped my pants.
Underwear too—my rock-hard dick sprang free.
"Ooh~ Sun-hu, you've gotten so big?"
Sis leaned in close, curious.
Then flicked the tip of my glans—thwack.
My dick jolted in shock.
"Ah, Sis, don't!"
"Such a wimp."
Sis giggled and shimmied out of her panties.
"Here."
She draped the warm panties over my erection.
Her heat still lingered in the fabric.
...What, was my dick a clothes hanger now?
"Hurry up. Just like you always do."
Jerking off with Sis watching...
No point hesitating—no way out.
Might as well get it over with quick...
I gripped my dick through her panties and started stroking.
"Hoo."
Sis watched with rapt fascination.
"Looks even bigger than last time?"
Her eyes on me, stroking with her panties.
Breasts fully out.
Hated admitting it, but... it felt way too good.
"You just rub it like that the whole time?"
"...Yeah."
"Feels good?"
"...Feels good."
At my answer, Sis leaned in even closer, intrigued.
"Then move your hand. Lemme try."
"...What?"
"Hurry."
I panicked and covered up with both hands.
Sis just yanked them away.
"Ahem. Like this?"
Her hand wrapped around my dick through the panties.
Started sliding back and forth, just like I had.
"Ah..."
The soft panty texture.
The pressure from her grip.
Nothing like doing it myself—pure bliss.
"How's that? Feel good?"
"..."
"No answer and I'll bite it off?"
"Good... feels so good."
I nodded frantically at her threat.
Sis beamed, pleased.
"Jin Sun-hu. Wanna grope my tits? Go for it."
"...Nah, I'm good."
Tempting as hell.
But I couldn't admit it.
Of course I wanted to—but no way I'd let her see that.
"I said touch."
Like she read my mind, Sis grabbed my hand and planted it on her breast.
"Ah."
So... soft...
Like my hand was melting right in.
"Well?"
"Good. Insanely soft..."
Couldn't think straight.
Just kneaded her tits with both hands.
Lost in it completely.
Was there anything better in the world?
"Hehehe. Too cute♡"
Sis laughed, kept pumping my dick.
Then, after a bit, something shifted in her.
"Ah...♡"
Her body quivered faintly.
Grip on my dick loosened a tad.
"Haa... Yeah♡"
Right hand still stroking me.
Left hand? Slipped between her thighs.
Wait, was Sis... touching herself right now?
"Yeah... Ahh...♡"
Her left hand fidgeted down there.
Nightie hid it, but no doubt.
"Sun-hu. You feeling good too♡?"
Her voice dripped honey.
Never heard her sound like that.
"...Yeah. Good."
"Haa, Uh...♡"
Sis masturbating right in front of me.
Stroking my dick the whole time, letting me fondle her tits.
So surreal—my lust ballooned.
Any second now, I'd blow.
"Haat...♡"
Her hot breath grazed my thigh.
Damp eyes gazed up at me.
That proud, strong Sis—with this face.
"Sis... I'm gonna cum..."
"Yeah. Cum for me. Cum all over Sis...♡"
Her tender voice melted my brain.
"Ugh...!"
Couldn't hold back—I erupted.
Waves of ecstasy crashed over me.
I groaned, body shaking.
"Aa... Sun-hu...♡"
Sis stared at my face, unblinking.
Eyes glazed over, mouth hanging open sloppily.
Always so poised around me before.
Now? Raw, feminine.
"Ah, me too...♡ Aahh♡"
Sis's voice spiked suddenly.
She curled up, clamping my dick harder.
But I was mid-orgasm, too blissed out to notice.
Sis shuddered violently, still gripping tight.
"Haa..."
Hips bucked a few more times before it finally ended.
Head was spinning—thought I'd gone dumb from the pleasure.
Tons of cum—Sis's tiny panties overflowed.
Spilled right onto her hand.
"Whew... what a pungent smell...♡"
"S-Sis, sorry."
Her germaphobe ass would flip, right?
Braced for the chew-out.
But Sis? Way outside my predictions.
She stared at the cum on her hand... then stuck out her tongue for a lick.
"...Sis!"
"Ugh. Tastes awful."
"Duh!"
Caught me totally off guard.
"What if you catch something?"
"I'm fine. Won't die."
"Still..."
Worried sick.
Cum wasn't exactly sterile.
But Sis wiped the rest off with her panties like it was nothing.
"So, how was it? Felt amazing, right♡?"
"...Yeah."
Couldn't deny it.
Was pure heaven.
Sis stretched, smug as hell.
"Phew~ Exhausted. I'm crashing. Wanna bunk with Sis tonight♡?"
She patted the bed beside her.
Her lips curved in a sultry smile.
Seeing those red lips hit me with sudden shame.
Oh yeah—my dick was still hanging out.
"N-No, I... uh, better go."
I scrambled into my pants.
Sis watched with a fond smile.
"Night, Sis."
Pants on, I bolted from the room.
The shame hit late and hard—couldn't stay another second.
Sis waved me off with a laugh.
"Hit me up anytime you wanna go again♡"
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