Chapter 50
Chapter 50
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Translator: penny
Chapter: 50
Chapter Title: 10. Doing Bad Things (2)
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...You were the one who kissed me first without a word.
You were the one who groped my waist all lewdly,
trailing your hands up my spine in a way that sent shivers racing through me,
then forcibly yanking up my bra that could've just been unhooked with a snap,
and kneading my soft nipples.
You were the one who started the bad stuff.
All I did was... just...
Help you practice on screwing your girlfriend.
So I just teased you to piss you off,
knowing full well you'd end up having sloppy, messy sex with her later—
on this bed,
in your house,
somewhere,
behind my back.
And that's how it slipped out naturally...
...Is your dick... small?
Ah, haha...
Joking. Just joking.
Did I hurt your feelings?
Adadak...
"......"
"......"
Clink, clink.
The sound of a man's belt unbuckling—something I'd never heard before—thuds heavily in my ears.
He pins both my wrists above my head, gripping them tight so I can't even cover my ears,
looming over me like he's about to devour me whole,
clink, clink.
"...Hey. Seo Woo-jin."
"What?"
"...No sex. Remember that...?"
"I never said anything about sex. I just asked if you wanted to see my dick."
Right.
That's true,
but you never know.
Just to be safe, I figured I should confirm one more time...
If it's just 'practice,' I could kinda play it off as innocent,
but if I actually have sex with my sister's boyfriend...
That'd be truly bad.
I
don't want to do bad things.
For real.
"Th-then you can take it off. Your pants."
"They're already off. Saying that now is kinda pointless..."
"A-anyway...!! ...I'll give it a check-up or whatever."
"A check-up?"
"I know what porn your sister watched. ...I kinda remember how big the dick in it was."
"Fine, go ahead then."
"...Say thanks quick."
"Thanks. You little virgin."
"...Adadak."
Seo Woo-jin just chuckles now, no longer scratched by the same old taunt.
His fumbling fingers slide his black slacks down to his thighs,
and there it is—men's underwear, thin, something I'd never seen in real life.
For a split second, I panic at the long slit opening to the side in the front.
"......"
Plop.
It flops out—
not quite what I'd imagined,
not matching the vague shape I'd pictured from,
you know, the stuff I'd seen in porn and all sorts of other media.
...A ridiculously huge dick.
Its lewd shadow falls across my lower belly.
From my tight little hole
all the way up
to just below my navel.
Vulgarly,
grotesquely.
"Hey. Lee Ji-yoon."
"......"
"Ji-yoon?"
"......"
"Oh, should I call you Ha-yoon sis right now?"
At that length, doesn't it exceed my handspan?
One handspan. That's gotta be...
20.
Over that?
No?
...Anyway.
So if I had sex with Seo Woo-jin,
that thing would plunge up to below my navel,
smashing my empty womb into a total mess,
thud,
thud,
thud.
...Spurt,
spluuurt.
Stuffing it full.
And then,
glug,
glug.
Overflowing...
Sis.
Would you be okay?
"Is it small?"
"...Huh, what?"
"Small? Sis."
"...S-small? This? And sis...? Oh, that..."
Seo Woo-jin smirks faintly at my rambling response to his sudden question.
I don't get why he's making that face at first, but five seconds later, it hits me.
He's obviously struggling not to laugh.
...Bad bastard.
He knows damn well his dick is huge and is doing this on purpose...!
"I don't really know average sizes for other guys."
"...You could tell from a couple porns, idiot!"
"I was only looking at the girl's body. Who has time to check out the guy's cock? I'm not gay."
"......"
"So, is it small?"
...What a bad bastard.
No way he doesn't know, even if he's not into guys.
He's just dying to hear 'it's big' from the same mouth that was teasing him seconds ago.
I knew guys were childish, but this much...?
How are a 20-year-old dude and a 10-year-old kid basically the same?
I stare up at his sly grin for a moment.
Then glance at the thick veins bulging on his dick.
"...P-pretty average?"
"Yeah?"
"Yeah. The dicks in porn were all about this size."
I force out the words and plaster on a casual smile.
I'll be childish too.
No way I'm giving you what you want.
Nyah nyah.
"So it's not on the small side, at least."
"......"
"Right?"
"......"
...Am I some kind of genius?
I game a lot but studied decently too...
"...Think whatever you want."
"Too bad. I think this size is plenty..."
"H-hey...! Wait a sec..."
"I thought it was bigger than most."
As I'm busy admiring my own smarts, Seo Woo-jin presses down on me and taps his hard thing against my bare skin.
Still over my intact jeans for now.
But my belly's fully exposed since he yanked up my top to grope my chest.
Like this,
in this embarrassing mating press,
shoving it in would reach this far, he's imprinting it on me.
...O-okay, fine,
that's not a big deal.
But every time his tip touches my belly, I flinch and tense up involuntarily,
my cheeks heating up despite my best efforts to play it cool.
Having sex with my sister's boyfriend behind her back.
Common sense says she'd never forgive me.
And yet, every touch sparks these naughty thoughts.
As long as sis doesn't find out, it's fine, right?
It's like the devil in my head is whispering.
Usually an angel would argue back from the other side.
Why's there only a devil in mine?
Get out of my head.
Die.
"P-pretty average..."
"If I shoved it all in, it'd reach here though? Average?"
"...Pfft. Shove it all in...? Girls don't like that. Such an adadak thought."
"No, I mean is it average. ...And how would you know that as a virgin?"
"Use your brain. That huge thing going all the way in would obviously hurt."
"You said it was average earlier. Been drinking?"
"...A-anyway...!"
I ramble incoherently,
my words not even making sense to me.
Let's just do it behind sis's back.
Seo Woo-jin's rock-hard dick shows he's turned on by my body, not hers.
My head spins from the devil shoving my back, but my resolve holds firm.
No sex.
It's bad.
...But,
"...Let go of my wrists for a sec. Move to the side."
If it's not sex.
"...Close your eyes. No, turn around and face the wall."
"Why all of a sudden?"
"Hearing you talk about shoving it all in makes me nervous. Can't do it."
"...So why face the wall?"
"I'll help you practice sex for sis, so face the wall...!"
So,
if it's just sex practice.
"It should be around here somewhere... ...Ah. Found it."
It's fine... right?
Sis.
"...You gonna stay like that the whole time?"
"...Shut up."
"If it's that embarrassing, you don't have to. I can be gentle with Ha-yoon sis..."
"...I said shut up."
After her bizarre declaration of 'sex practice.'
I couldn't wipe the grin off my face watching Lee Ji-yoon mimic her sister.
Clutching the pillow to hide her face out of embarrassment.
It was identical to Lee Ha-yoon's first time.
The emerald eyes,
getting tipsy off one sweet beer,
sensitive spots clustered right at the womb entrance.
They look so different on the outside, but they share way more than you'd think.
And I'm the only guy who knows.
Fun.
"So, you really gonna do it?"
"...Before I change my mind."
"Can I grab your thighs?"
"Don't ask every little thing...! Just thrust, you idi..."
Lee Ji-yoon mumbles angrily from behind the pillow.
I approach her lying there with thighs pressed together and kneel in front.
The bed creaks softly as it shakes, and she quiets down—cuter than expected.
The Lee Ji-yoon in my memories suited coldness more than this cuteness.
But realizing it was just 'shy around strangers' made this suit her better.
"What if you stain sis's clothes?"
"Just wipe it off and toss in the wash."
"No plan, huh."
"...I have more dolphin pants anyway. Won't show."
She yanks up the dolphin pants—'her sister's' ones she'd just changed into—out of embarrassment.
So...
She offers sex practice,
wearing her sister's dolphin pants,
using her own thighs for me to thrust into.
Too late to say it, but
is this a normal conversation?
...She just looks like a little sister lusting after her sister's boyfriend.
"You're embarrassed too, so I'll make it quick."
"...I-I'm not embarrassed at all... Are you maybe conscious of m..."
"Say that without the pillow first."
"......"
"Relax your legs. Drape 'em over my shoulders. At this rate, I'd have to hit your calves."
"...O-okay... Go..."
Humans adapt to anything.
The first try's the hard part; once you grit your teeth and do it, everything after's easy.
Stealing,
prepping to fuck a hero,
secret meetings with your girlfriend's sister.
All the same.
Today: thigh job.
Tomorrow: handjob.
Day after: penetration.
Then creampie.
Then pregnancy.
Something like that.
Not planning to rush that far, obviously.
...Anyway.
"Hoo..."
"......Ngh..."
I squeeze her pale, smooth thighs together
and shove my throbbing erection into the tight gap between her soft flesh.
Part of me wants to ignore her words and just pound away...
...Later.
When she pulls this 'for sis' crap next time,
whispering in her ear what she was thinking,
her reaction'll be hilarious.
"...Deeper? Or just this much?"
"...H-how much is in...?"
"Roughly... a bit over half. Enough it doesn't poke out your thighs."
"......Wait."
Still clutching the pillow, she cautiously places a hand on her thigh.
Gonna rub the tip with her palm maybe?
As I idly wonder, her fingers wiggle along the side instead.
...Then,
she measures the thickness of her squeezed thighs
and gently presses her spread fingers to her lower belly.
To gauge the 'length.'
Gently.
"Hey. Seo Woo-jin."
"Yeah."
"A bit over half, right?"
"Yeah."
Thumb on her navel,
pinkie reaches her crotch matching her thigh thickness—
just a few centimeters past the navel downward,
Lee Ji-yoon estimating how deep it'd go in 'real' sex.
She
"J-just that much..."
"......"
"Any more and... it'd break for sure. ...Sis."
"Yeah?"
Not even to the root,
just barely over half,
and she's waving the white flag,
tucking tail.
Not forgetting to drag sis into her excuse even then.
So damn cute.
"...Yeah. So now... move slowly. I'll tell you if it's weird."
"Love you."
One word.
"Wh-what...?"
"I love you. Sis."
"Ah, th-that, haha..."
"......"
I say it on purpose,
"I... l-love you too... Woo-jin..."
"...Doesn't suit you, so no 'Woo-jin'."
"Sh-shut up..."
I start thrusting nicely into Lee Ji-yoon's thighs.