There's No Way I'd Get Excited Over My Sister's Chest
There's No Way I'd Get Excited Over My Sister's Chest
"......Right, if dating's too hard, then just have sex with each other or something."
Mom's remark made us freeze mid-chopstick lift.
For a moment we just blinked like idiots, wondering if we'd misheard.
The silence was broken by Lee Suah.
"What?"
Lee Suah asked, forcing a calm expression.
It had to be a misunderstanding.
That's what it was, obviously.
Both of us wanted to believe that, but—
"You kids...... Did Mom say something she shouldn't have? If you're gonna fight like that, then make up with your bodies instead."
A wedge drove straight into our chests.
"Sex—don't tell me neither of you has tried it yet?"
"......."
"......."
Silence fell again.
Where the hell do I even start complaining? It was so absurd my brain just stalled.
'What kind of day is this......?'
First Mom, then the store manager.
Why are they both so desperate to mess with me and Suah?
They never cared before.
Hearing this crazy shit over and over was making my head spin.
"W-What the hell are you saying──?!"
Kwang!
Unable to hold back, Suah kicked the table and shot to her feet.
"Are you out of your mind, Mom?!"
"Hey, hey! Watch your mouth!"
"You're the weird one! Why the hell would we have sex? We're not horny animals!"
Yeah.
Sex with Suah? That was never gonna happen.
At least not for us siblings.
No matter how pent-up anyone got, you don't screw your own family like some beast.
For once, Suah was thinking like a normal person.
But Mom's reaction was completely unexpected.
"Y-You two...... really......!"
Mom burst into tears with a sudden wail.
Seeing that, even the fuming Suah looked visibly flustered.
"Mom was just hoping you two would get along better......!"
"Ah, seriously! Why are you crying?!"
"All the moms at my company say their kids sleep together and go on dates to stay close. That's how kids these days live......!"
I couldn't help but press a hand to my forehead.
Sharing a bed under the same blanket? Going on dates?
......Between siblings?
I had no idea how to even respond to Mom's words.
It was so far outside the realm of understanding.
Suah was just as dumbfounded.
"......Whatever, do what you want!"
She shoved her chair back and stormed off to her room.
"Hey, at least clean up what you ate!"
"Do it yourself!"
Kwang!
The door slammed shut.
Only Mom's pitiful sobs and a strange, uncomfortable feeling lingered in the living room.
Even after dinner ended and the dishes were done, that gross, sticky feeling wouldn't go away.
Something unpleasant and clingy.
The second I got back to my room, I flopped onto the bed.
"Ha, shit...... All because of Suah."
Told you not to steal other people's chicken breast. Now we're in this mess.
With that nasty personality of hers, of course she made Mom cry too.
Useless as always.
"......Tsk."
Guess there's no helping it.
If I wanted to fix this awkward atmosphere, I'd have to be the one to reach out first.
No way Suah would apologize on her own.
......Why the hell did that auntie have to say something like that?
Anyway, this was just something I had to do.
I was just gonna let it slide this once.
[Me: Hey]
[Me: Suah]
[Me: You asleep?]
She must've been on her phone.
Her reply came right away.
[Suah: Fuck off]
"......Sigh."
Figures.
I was an idiot for expecting anything else.
That's why she graduated college and still can't get a single boyfriend.
With no sign of things improving, my mood just got more complicated.
All because of Suah.
"Ugh......"
I rolled around on the bed for a while, but the gross feeling wouldn't leave.
I watched some shorts, messed around on the community boards.
When even that got boring, I finally couldn't stand the frustration anymore and sat up.
Can't sleep, it's driving me crazy.
Kkiiik-
"......."
"......."
Suah was curled up on the living-room sofa.
Phone clutched tightly in her hand, she sat with a strangely prickly posture.

"Not sleeping? What're you doing?"
"...Can't sleep, so what am I supposed to do?"
"Bullshit. You were probably jerking off in your room again."
Same old line.
I've never done that in my room, but last week she threw a fit saying it smelled weird.
Getting called a pervert with zero evidence pissed me off so much that words I didn't even mean slipped out.
"Not like you're gonna help, so why are you butting in?"
"......! Y-You......!"
"Ah, whatever. Even if you offered, I wouldn't take it."
Suah's face flushed bright red as she trembled.
Her tiny fists clenched tight, shaking—it was kinda funny.
I'd only said it on a whim, but the impact was better than expected.
'......Not like I'd actually ask her to do it anyway.'
Yeah.
No way in hell I'd ask Suah for something like that.
She's dumb, her personality sucks, and the only thing she's got going for her is her body......
.......
Glance.
Without thinking, my eyes drifted to Suah's chest.
The oversized shirt she'd been wearing around the house for years.
It was so stretched out from constant use that it was practically shapeless now—big enough for a whole person to slip through.
So, just a little bit was visible.
Following my gaze downward, I caught a faint glimpse of a pink nipple.
"......!"
Shit.
I whipped my head away before I even realized it.
Must be because of all the weird shit I'd heard today.
It's not like I haven't seen Suah's chest plenty of times before.
"......Hey."
Why was it so hard to look away?
"You were just thinking something weird, weren't you."
"......No, I wasn't."
"Bullshit. You pervert."
Ah, damn. She caught me?
I awkwardly wandered over to the water purifier and drank some water.
Her senses were way too sharp for no reason.
"Where're you going?"
"...My stomach hurts, so I'm going to the bathroom."
"......!"
Suah's expression twisted with pure disgust.
"Fuck...... You're actually disgusting......."
She yanked her sleeve up to cover her chest.
What.
Wait a second.
This was a total misunderstanding.
"Hey...... How the hell do you look at your own noona and think that......"
"Ah, please."
"Want noona to help you out? Your eyes look seriously perverted right now."
"Seriously pisses me off, so shut up already."
"Disgusting bastard. Pervert bastard."
Avoiding Suah's glare, I slipped into the bathroom.
No, this was unfair. Seriously.
A grown-ass adult man can jerk off if he wants.
Anyone would think I got horny looking at Suah's chest.
"Khm, ahem."
Well......
Not like I'm not gonna do it anyway.
*
'H-He's actually insane......!'
Darkness had settled over the living room.
Suah curled up tightly on the sofa without thinking and covered her face with her hands.
Her cheeks burned.
She couldn't even guess how red her face must've gotten.
'How could he look at me and......'
Disgusting.
It was so disgusting she felt like she was losing her mind.
She'd worked so hard to be a good noona for him, and now he was harboring lust for her......
It was something she'd never even imagined.
'Lee Siwoo, you horny bastard.'
Staring at someone else's chest like that.
Did he think she wouldn't notice?
It felt gross.
It really felt gross.
"What's so good about something like this anyway."
Suah lifted her own breasts with both hands.
A heavy, springy sensation filled her palms.
They were pointlessly heavy, sweaty and uncomfortable in the summer. What on earth did her little brother find so appealing that he had to sneak glances?
'......And he's still a virgin, too.'
Yeah.
Just earlier, he'd definitely been having some nasty fantasy while staring at her chest.
Probably imagining squeezing these stupidly big things however he wanted.
Maybe even fantasizing that she'd feel good from it, that she'd get addicted to her brother's touch and cling to him.
'Seriously, I can't even look at him.'
None of that felt good at all.
And he didn't know a single thing about women......
"......Hnn."
Twitch-
The moment she became aware of the pleasure rising from below, her fingers stopped moving.
'Ah...... I did it again.......'
Lately, Suah's body had been acting on its own more and more often.
Before she knew it, her hand would slip under her underwear without her realizing.
Like someone scratching an itch.
Of course, she'd never done it in front of anyone else—only when she was alone.
Lately she'd been extra careful.
Because of Lee Siwoo.
Her brother, who'd just come back from the military, was home now.
'......If it weren't for you.......'
Even just now, it was nighttime and the surroundings were dark, plus she reacted quickly, so nothing happened.
But if her brother had suddenly come out of his room, she might've been caught.
He should've been asleep at this hour.
She'd panicked and ended up being a little harsh.
'No...... It's fine to be like that with that bastard.'
Yeah.
This was all because of Lee Siwoo.
Lately he kept looking at her with those weird eyes, so of course she'd become conscious of it.
Using his own noona as jerk-off material.
Ungrateful bastard.
"......?"
That was when it happened.
Flinch-
A sudden chill ran down Suah's spine.
'Did he...... see?'
It was just a delusion.
No, she was half-certain.
What if he'd just seen her comforting herself?
"Ah, haha......?"
Yeah.
There was no other explanation.
Suddenly saying he'd rather get help from her, and then acting like he was going off to jerk off right in front of her.
No sane person would do that.
Creak-
"......Ah."
He saw.
Her brother had seen everything.
Her, acting so vulgar and lewd even though she was supposed to be his noona.
And yet.
Why wouldn't her fingers stop?
'She's crazy, Suah's crazy......!'
With the whole family home, what the hell was she doing in the middle of the night?
Getting caught masturbating by her own brother, and getting this turned on by it......
"Ah, ah...... Hnng-!!"
Tremble.
'Ah, no......!'
Even while climaxing, she desperately squeezed her shaking thighs together.
If she dripped onto the floor, she'd definitely get caught.
She'd already been caught once—she couldn't afford to be caught again.
With practiced ease, she pulled out tissues and wiped away the evidence around her.
'......Ah.'
I've really become a pervert.
Blaming her brother when she's the pathetic one.
Swish, swish-
Suah pulled out a few more tissues to stop the flowing fluids and stood up.
She lightly wiped herself with the tissues, then headed to the bathroom to rinse off with water.
It had become her daily routine.
Every single night.
Every afternoon while her brother was at work.
It had gone on so long that it felt completely natural to Suah.
Because of that.
She noticed the presence too late.
The door burst open.

"───?!"
"Ah, ugh! W-What are you...... Aah!"
Spurt, spurt......!!
Freshly ejaculated semen sprayed weakly between the siblings.