Chapter Index

    .

    Brighter than me.

    Cuter than me.

    Smarter than me.

    An unnie with no flaws.

    Right in front of that unnie—

    …I peel off the condom wrapped around the tip of unnie’s boyfriend’s cock,

    swollen and packed with cum at the end.

    “…Do you usually cum this much with unnie?”

    “…Dunno. Who the hell keeps track of that shit?”

    “But you’ve gotta have a rough idea, right?”

    “… .”

    “Similar? To this?”

    “…Yeah.”

    Heeh.

    So this is the average…

    No wonder he cums way less inside me than this.

    Then again, we’ve done it raw, so of course a condom wouldn’t be as satisfying.

    Staring at Seo Woojin’s dazed face, I think to myself—

    “…Here. Unnie’s.”

    “… .”

    With all my heart.

    Just as Woojin ordered.

    I glance at unnie beside me and put on a resentful expression.

    After all, the “doctored” condoms unnie’s been using these past few days only had a fraction of this much cum in them.

    Whatever the backstory, right now, I’m the loser, aren’t I?

    …So go ahead, enjoy it while you can.

    Soon enough, unnie won’t have a choice but to seethe with jealousy over me.

    “And unnie, move aside a little. Stop lying on the couch.”

    “…Y-Yoowoon… because of…”

    “Then should I go into your room and get it? The condom?”

    “… .”

    Did she not want me stepping into her space with her boyfriend?

    Unnie, panting as she lay on the couch, tosses me one of the condom boxes buried in the corner.

    Whoosh—it flies toward me, hits my chest, and falls. Picking it up, I see it’s not a new one but the same box we opened earlier.

    Since we just used one, there are two left.

    I take one out, tear it open right in front of unnie,

    …then turn around.

    “…Hey, wait… it’s heavy… .”

    “Nghh. …Ngh.”

    Pinning unnie down—

    just slightly, really just slightly—

    I look at Woojin with the oversized condom,

    stretching it cutely between my lips,

    its faint rubbery scent devoid of any fruity fragrance.

    You wanted to see this, didn’t you? Right?

    You wanted to see unnie and me fighting over your cock, didn’t you?

    You… …pervert.

    “… .”

    Seeing how hard it is again despite having just cum, I guess I was right.

    …You’re even more of a freak than I thought.

    Pfft…

    “Ngh, heh… ngh… .”

    Exaggerating a bit, it’s as thick as my forearm.

    If I held it vertically over my face, it’d barely cover my lips.

    Horizontally, it’d definitely block both my eyes—

    this veiny cock.

    I press my lips to the tip as if kissing it,

    then immediately take it deep into my mouth,

    filling every inch—

    the tip of my tongue,

    the roof of my mouth,

    …and probably my uvula.

    Pushing past it,

    right to the entrance of my throat,

    where tiny gags rise up.

    “Pff…”

    Even then, half of Woojin’s cock remains untouched.

    Staring blankly at it, I wonder—

    if I tilt my head, could I force it deeper into my throat?

    Driven by curiosity, I try shoving it in further—

    Pah!

    Before I know it, strings of sticky drool spill out as I clumsily spit out the condom-covered cock.

    …I thought I’d gotten used to it by now, but I guess not.

    Maybe there’s something else.

    Something that’d excite that freak who gets off on watching sisters with a strained relationship fight over his cock.

    He’d probably love a threesome with unnie and me all night, but judging by unnie’s reaction, that’s not happening anytime soon.

    Ah.

    How about this?

    “…Hehe. I think it’s even bigger than when you were with unnie earlier… .”

    “Dunno.”

    “Just say yes. I can’t see from unnie’s spot.”

    “Hey, Lee Jiyoon…!”

    “… .”

    Unnie just barks my name like a dog, not even trying to hit me or anything.

    From on top of her, I grin—

    …then slowly pull the half-covered condom back out,

    pretending to give him a blowjob,

    while gnawing at the useless rubber tip with my front teeth,

    lightly tugging at it as if trying to tear it off without unnie noticing.

    Sluurp, sluuurp.

    Slowly.

    All the way down to the base,

    where his cock twitches pleasurably.

    Slowly dragging the condom down.

    How’s this?

    “…Ptui.”

    The condom tip, fine just a second ago,

    is now crumpled and soaked with spit.

    I cut the silvery string of drool connecting it to my lips with my tongue and smile.

    It’s not like the condom ripped or anything from just this…

    …but Woojin’s cock—

    I can’t tell if it’s bigger,

    but it’s definitely hotter,

    harder—

    I can feel it in my grip.

    Guess he likes it.

    …Freak.

    “… .”

    “… .”

    “I-I put it all on… .”

    Was I getting excited too?

    The embarrassment I should’ve felt earlier now hits me like cotton candy, melting all at once.

    …Even though we’ve done creampies, I thought I was past feeling shy over small things.

    Maybe it’s because it’s the first time I’ve pinned unnie down and begged for a creampie.

    “Then now… .”

    But I can’t just bow my head in shame in this situation.

    Swallowing my pride, I glance back and see unnie, who’s calmed down quite a bit while I was putting on the condom.

    The cute unnie I’ve known for 20 years looks different now—

    still flushed, unbearably lewd.

    I wonder if I make that same face right after sex with Woojin.

    Lost in thought, I tuck my hair behind my ear,

    put on a playful smile,

    and get into position—

    kneeling beside unnie’s hips before she can slip away,

    placing my hands on either side of her shoulders,

    leaning over…

    …done.

    “Hey, get off… What are you doing on top of me…?”

    “Doggy.”

    Clear and deliberate.

    I enunciate each syllable,

    and unnie’s cheeks, which had just started returning to normal,

    flare red again.

    It’s not like she’s never done this position before,

    so her reaction must be because of this—

    my arms and legs trapping her in place,

    making it impossible for her to escape unless she shoves me off.

    “I-I know that…! Move me to the side first…!”

    “Why?”

    Why should I?

    If unnie watches from the side,

    Woojin won’t press his cock between my cheeks like this.

    He won’t use his thumb to spread my dripping pussy open so shamelessly.

    Like this.

    “Instead of standing awkwardly to the side, just stay under me… …ngh… .”

    He won’t tease me by rubbing the head against my entrance like he’s about to push in any second.

    “…S-Seo Woojin… stop… .”

    “… .”

    “…Hah…!”

    …He won’t grind the tip against my pussy like this,

    then suddenly—

    Squelch, thud.

    shove it all the way in,

    ignoring me completely,

    not even bothering to fuck me properly.

    Why would I let unnie go…?

    …Just,

    be a good bed.

    Can’t you do that?

    Woojin too.

    Me too.

    That’d be even hotter.

    “Sss… ngh, hng… ugh… .”

    “…Hey, Jiyoon… .”

    The same head that was pressing against the roof of my mouth and throat just moments ago

    now reshapes my inner walls to its liking.

    I pant hotly over unnie, who’s lying dazed beneath me, ears burning.

    …Is it because I’m using unnie like a bed?

    Woojin isn’t rough with me like usual.

    Not like after he mistook my preferences for unnie’s…

    He’s not gripping my hips and pounding into me until my ass claps.

    He’s not pinning me to the couch and slamming into me like he did with unnie.

    Instead, he’s slow,

    as if savoring every inch of my walls.

    It’s maddening.

    “Hah… ngh…? Ah…?”

    Pure pleasure-wise,

    being fucked like an animal until I can’t breathe is incomparably better.

    But the quality of the pleasure…

    is different.

    Every time Woojin grips my hips lightly,

    rubbing my walls slowly,

    the pleasure shoots up my spine—

    …it’s

    dangerous.

    “…J-Just… wait… .”

    Somehow, the same words unnie said earlier.

    I barely manage to whisper them as I lower myself.

    …Annoyingly,

    I can’t hold myself up anymore.

    Until my chest touches unnie’s.

    “…Can’t breathe… .”

    “Ngh, ugh… .”

    Is it the mood?

    Or because I’m having sex in front of unnie…?

    Before I can think further, unnie, muttering about suffocating,

    carefully supports my shoulders.

    Collapsed over her,

    I bury my face beside hers

    and let out nothing but humiliating little moans.

    Since I can hear unnie’s voice so clearly,

    she must hear mine too.

    I’m too embarrassed to think about what unnie must think of me like this.

    And yet, the pleasure shooting up from my walls only grows,

    never fading.

    He hasn’t even pushed all the way in yet,

    but his cock rubs against all the right spots—

    …honestly,

    it feels

    too good…

    “…Hah… ♡”

    In the end,

    I squirt all over the couch.

    Squelch, splurt.

    The sound of liquid forced through a tight space,

    mixed with unnie’s gulps,

    echoes in my ears.

    Once.

    Twice.

    Thr… ee.

    It keeps leaking out—

    …too much to count.

    “Hey, Woojin… ah.”

    “…Yeah?”

    “Does Jiyoon always… do this?”

    “… .”

    I don’t.

    I don’t usually do this.

    It’s just… something’s off today.

    But the only thing leaving my lips are vulgar moans.

    All that’s left is Woojin’s answer:

    “Not usually, no.”

    “Hah… hah…”

    “She’s usually… like this.”

    “Hnguuuh?! ♡ …Ngh…?”

    Because of Woojin,

    who spews nonsense

    and suddenly rams his cock deep into my cervix.

    The shameful moans I didn’t want anyone to hear

    and the lewd sounds of the couch getting wetter

    only grow louder.

    “…She’s really sensitive.”

    “…Like unnie. Maybe it’s a sister thing.”

    “Hah… haah…”

    “I-I don’t twitch like this…!”

    “Unnie, you don’t remember two minutes ago?”

    “…Ngh…”

    “That’s…! B-Because Jiyoon pressed on my stomach…!”

    “Your stomach?”

    “Hah, heh…”

    Even though my vision’s whiting out,

    these two keep talking like nothing’s wrong.

    Maybe because I’m stuck between them,

    clenching around Woojin’s cock.

    Or maybe…

    this was their plan all along.

    …Finally deciding to go all out,

    Woojin starts fucking me in earnest.

    “…I don’t get it, but pressing her stomach… feels weird.”

    “How’d you do it?”

    “…Hah… ngh.”

    “Like… this?”

    “Nghh?!? W-Wait, unnie… stohp… …unniee…!”

    Unnie’s the one

    pressing her fingers into my lower stomach.

    “…Huh. I can… kinda feel it moving.”

    “St-Stop… please… .”

    “…Why? You did it too.”

    “I-I messed up… unniee… .”

    Unlike me, who let go immediately,

    unnie keeps pressing right below my cervix,

    as if trying to kill me with pleasure.

    Woojin, gripping my hips,

    hasn’t given me a single break since earlier.

    “…Wow. Look at all that juice.”

    “……♡ …♡♡”

    Over unnie’s shoulder,

    face buried in the couch,

    drenched in my own drool—

    all I can do is twitch

    and squirt.

    “Jiyoon-ah. You okay?”

    “…Hah… hah…”

    Do I look okay?

    Even from the side, it’s obvious I’m about to break.

    Is this some kind of power struggle between women?

    All I can do is gasp for air,

    so I answer by lightly biting unnie’s shoulder.

    “Ow. …That hurts… .”

    “… .”

    But.

    For some reason.

    “…Ngh… ♡”

    Woojin, who has nothing to do with this,

    …is fucking me even harder than before.

    Is he… getting off on watching sisters go at it?

    “Hah… hah…”

    …Freak.

    You really get off on lesbian play, huh?

    I looked some up thinking you’d like it, but…

    …Ugh, damn it.

    I’d never do that with unnie.

    …Asshole.

    “Ah, don’t lick where it hurts… …it tickles… .”

    “… .”

    “…Jiyoon-ah? Hey… .”

    Because Woojin likes it.

    The more he likes it,

    …the harder

    he’ll fuck me.

    “…Tch.”

    “Ah, ah… …ah… …♡”

    Woojin grabs my hip with one hand

    and rams into me.

    Compared to the lazy thrusts from before,

    this is incomparably rough.

    In the end,

    I’m left licking unnie’s spit-soaked shoulder

    as—

    “Ah, I’m cummiing…!”

    Splurt, squelch.

    Sploosh.

    Squelch.

    Splurt, splurt.

    —Woojin’s cum floods deep into my womb,

    as if trying to impregnate me.

    …I take it all.

    Unfortunately.

    Or fortunately.

    The condom’s tip had torn open.

    So it spills out.

    Every last drop.

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