Chapter Index

    …What was that?

    Hayoon’s reaction just now.

    If it was because she was in pain, she wouldn’t have been fidgeting the entire time we were talking…

    To put it crudely, it was like watching someone desperately holding back the urge to pee.

    But assuming it was really that—

    It felt more like she was hiding behind Woojin to avoid talking.

    I got that kind of vibe, overwhelmingly so.

    But even that’s a little weird.

    Hayoon isn’t the type to shy away from someone, is she?

    More like a social butterfly.

    She’s the type to chat and laugh brightly even with someone she just met.

    So why did she act like that just now? I have no idea.

    …Was she really holding in her pee?

    Or…

    “…….”

    Could she have been…

    Wearing some kind of lewd toy?

    “I’m back.”

    “Sweetie~ You’re home?”

    Ah, unlikely. A lewd toy? No way.

    Hayoon wouldn’t do something like that, right?

    Pushing aside the delusions that kept popping up, I headed into my room.

    “Phew…”

    …Though that didn’t completely erase these bizarre fantasies.

    “…Seriously, what was that?”

    It had been about two hours since I last saw Hayoon.

    I’d already finished dinner with Baek Jiho and even returned home, yet the strange scene from earlier refused to leave my mind.

    Hayoon hiding behind Woojin, groaning repeatedly… It wasn’t something I’d ever seen her do before.

    If she had been alone with him, I probably would’ve just cursed Woojin out and called it a day.

    Woojin, that fucking lunatic.

    Now he’s making Hayoon play along too?

    Something like that.

    Think about it. There’s no way Hayoon would’ve suggested something like that herself, meaning the culprit is naturally Woojin, right?

    If that were the case, my brain wouldn’t still be grinding gears like this.

    But the problem is that her younger sister was with them this time.

    “No way he’d do that in front of her sister.”

    Would the sister just stand there calmly if something inappropriate was happening?

    Or would she have refused to come along on their date altogether?

    No—more accurately, wouldn’t Hayoon have made sure her sister couldn’t come in the first place?

    And just like that, the whole thing sinks back into mystery.

    “…No idea.”

    At this point, I might as well say it outright—her reaction was so suspicious I honestly wondered if she really was wearing a vibrator… but ultimately, Jiyun’s presence alone debunked that absurd speculation.

    Scratching the nape of my neck, I stuffed the lingering doubts into a corner of my brain and got up.

    I’d just gotten home, but instead of showering or changing, I’d flopped onto my bed.

    If Mom or Baek Jiho had seen me like this, they’d have scolded me endlessly…

    Anyway.

    Setting aside the strangeness from earlier, at least Hayoon seemed to be in a good mood—that was a relief.

    Whether Woojin had a fuck buddy… or whatever in the past, the important thing is that they’re happy together now.

    Honestly, I’m probably just overreacting. These days, you can’t expect to exclusively date virgins & inexperienced people anyway.

    Given her looks, it’s not strange at all.

    And hey, at least when they do get around to doing the deed, they won’t awkwardly mess it up like some inexperienced couples. That much is reassuring.

    “Ugh…”

    Unhooking my bra as I got ready to shower, I checked the time on my phone one last time before stepping into the bathroom.

    By now, Hayoon and Woojin had probably parted ways.

    Or maybe they were cuddling on the couch after dinner.

    …Unlike those two, who clung to each other despite acting suspicious,

    I didn’t even get a Hey, you home? text.

    Thinking of the boyfriend who had practically become family more than a lover,

    378

    I felt like I was losing my mind.

    “…Oh, the pizza here’s delicious. First time trying it…”

    “Nn, ngh… Mmph… Tchup…”

    Right here, on this couch,

    your sister is getting railed beneath me.

    With the same cock that was just scraping against your walls moments ago—now taming your little sister instead.

    And your reaction? Casually chewing on a slice of the freshly delivered pizza, as if none of this is strange at all.

    Your sister’s slutty moans,

    your boyfriend’s ragged breathing,

    the obscene sounds of flesh slapping together—echoing through the living room again and again—

    Even as I hold hands with your sister, forcing a deep kiss filled with forbidden lust onto her while fucking her senseless—

    You, Hayoon, still caring more about the stringy cheese from your pizza than any of it—

    make me want to lose my mind.

    “…Two slices each should be enough, right?”

    “…Haaah… Haa…”

    And then there’s you, Jiyun—

    who, after being loved senseless by me just last night, clings to my back like it’s not enough, scratching me with your nails.

    Whose tongue tangles with mine as you greedily swallow every drop of spit like it’s nothing.

    Who, because you feel pleasure the same way your sister does, lets me ruthlessly pound your deepest spots—

    Even as I use my cock, still slick with cum, to grind against the roof of your cunt—

    Even as I focus on shallow strokes just to hear you whimper helplessly—

    You, who feels nothing but ecstasy instead of pain—

    make me want to lose my mind.

    …So.

    “…Ah, ah… Ah…♡”

    I drape myself over you on the couch,

    pressing down,

    breath hot against the air-conditioned room,

    roughly.

    Burying my face beside yours, Jiyun.

    …Not even letting your moans escape your throat,

    only letting the wet sounds of sex reach your sister’s ears,

    only letting the couch get drenched in your slick—

    I start thrusting in earnest.

    “Haa… Unnie’s… watching…♡… Tchup…”

    Busy stifling your own moans, yet still desperately trying to provoke me—our lips crash together.

    My tongue swallowing yours,

    then pushing past your lips again.

    Even lost in this surreal depravity, you still manage to smirk—

    So I slam into you harder,

    until my cock is buried to the hilt,

    until you lack the strength to even clench—

    …Squelch, splurt—

    Your juices drench my lower stomach,

    betrayal burning through my brain,

    breath hitching uncontrollably as I press my tongue into you,

    marking you with my taste—

    Then,

    once again,

    your sister’s boyfriend’s cock

    rams into you with purpose.

    “…You two still not done?”

    “Just a sec… A little… Hah… Just a little more and I’ll be finished…”

    Don’t overdo it with Jiyun. Stop by the time the food arrives.

    Crushing that flimsy promise like trash,

    even as sweat drips onto the couch and floor,

    even as Jiyun’s teasing calves and thighs press against me—

    Right before release,

    just on the edge—

    I drive deep,

    over and over,

    past your cervix—

    “…Stop trying to slack off and tighten up properly. You think holding back stops me from cumming? Dumbass.”

    “…Nhh—!”

    Jiyun, who had already slumped onto her side,

    letting me bite her ear and groan into it—

    …Her flawless thighs,

    the soft curves of her ass—so much like her sister’s—

    Slap, slap—

    until waves of pleasure wrack through her.

    Clenching her hips, I pound into her again and again—

    “…Seo… Woojin… You really are a pervert.”

    “…What?”

    “Even more than… when you sneaked around with me and Unnie… yesterday…”

    “…?”

    “Doing it raw… with your girlfriend’s little sister… in front of her…”

    “…?”

    “Makes you… even more turned on…♡”

    Even though your sister might hear.

    Even if your ears are ringing from the noise—your sister might still hear.

    Yet you whisper these obscene confessions—

    So eagerly accepting your role as my plaything—

    You make me—

    “—Hey, wait… Mmh♡”

    Grabbing your pale breasts roughly,

    crushing my hips against yours regardless of pressure on my balls,

    pouring everything—

    deep inside you,

    where nothing can spill out—

    until I’m emptying myself into you completely.

    “How much… Haa… How much more… do you need…?”

    Because this crazy girl’s desire—this is it.

    Being chosen by her sister’s boyfriend—right in front of her.

    Taking what’s hers completely.

    Being acknowledged as the better woman—unlike her effortlessly perfect sister.

    And to fulfill that twisted craving, I fill her until her waist aches—

    …Still twitching from climax, her cunt gripping me erratically—

    I slowly,

    pull my throbbing cock out—

    before thrusting back in once more.

    Gripping Jiyun’s hips, I match her squirming rhythm,

    pretending to stay composed while staring at her shamelessly heaving chest—

    then finally pulling out for good.

    “—Hey. Seo Woojin. You fucking… psycho.”

    “Hah… Haa…”

    “Even if you started taking meds… cumming this much inside her? What about the couch? Unnie and I sit here!”

    “…Hey, could you not talk about gross stuff while we’re eating?”

    “Unnie, pass the wet wipes… Ah, thanks.”

    My heart’s pounding so hard I can’t think straight.

    Even with the AC on, sweat pours off me like rain.

    That’s part of it, but mostly—it’s this damn girl provoking me nonstop.

    Even before I tried molding her, she already had these twisted desires—honestly, maybe even more than Yozora.

    Hayoon might’ve been an innocent girl I slowly corrupted,

    but with Jiyun—it felt like I was the one getting devoured.

    That near-certainty lingers as I push my sweaty bangs back.

    Exhausted, I slump onto the corner of the couch—just as Jiyun, lazily wiping the couch with a wet wipe, crawls over to me.

    “Jiyun. I’m gonna go splash some water on my face. You should just—”

    “Bleh… Nh, haah…”

    …Despite her short hair,

    just like back when we “practiced” sex during winter—

    she clumsily gathers it behind her head,

    ready to clean my cock with her mouth.

    “…Haa…”

    “Mmph…♡”

    Right in front of her sister,

    she takes the cock that just fucked her raw,

    and cleans it,

    thoroughly.

    …This overwhelming rush of conquest—

    I don’t know

    what to do with it.

    “…Ghk, slurp…”

    Even as Hayoon chews on her pizza, watching us—

    …I rest my hand on Jiyun’s head,

    petting her,

    pulling her closer to kiss my groin,

    indulging in this depravity—

    unknown to her friends,

    unknown to the neighbors next door—

    until I’m fucking bursting.

    “…Haah… Ngh, ngh… Mmph…♡ …Bleh…”

    A witch—

    once admired by all,

    once cheered on by all,

    once loved by all,

    that insufferable hero—

    …Now here,

    with thick streaks of cum

    on her 20-year-old sister’s tongue—

    I superimpose her image over Jiyun’s face

    as I fuck her senseless.

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