Chapter Index

    .

    A KakaoTalk message saying he’d treat me to something delicious someday since he was grateful for all the help I’d given him so far.

    I blinked blankly, focusing on that last sentence.

    Of course, it wasn’t because of some cutesy thought like, What kind of food should I get from Seo Woojin?

    Rather, it was because about 15 seconds before receiving that message…

    …I’d subtly asked Woojin, “Wanna have sex with me again behind unnie’s back?”

    And got rejected instantly.

    “….”

    …Why?

    Am I not attractive enough?

    I mean, I do think I’m on the prettier side…

    If I had to compare myself to people around me, well…

    About as much as unnie.

    No, maybe a tiny bit more. Yeah.

    Or was it because he liked hearing oppa so much when he was having sex with unnie earlier?

    I mean, he’s only surrounded by people his age or seniors, so maybe being called oppa really got to him…

    If not that, then was it unnie’s hairstyle?

    Does Woojin have a thing for long black hair tied up in a ponytail like unnie’s?

    Mine only goes down to my shoulders, so I can’t really pull off unnie’s style.

    If it’s not that either…

    …Did he feel like he was cheating?

    “…It’s too late for that now, isn’t it?”

    This is hard.

    I feel like I almost understand why Woojin suddenly acted like that, but I just can’t put my finger on it.

    After muttering to myself for a while, I figured I’d had enough fresh air.

    I closed the window firmly, lay back down on the bed, and glared at my phone—the root of this whole mess.

    If he stopped because it felt like cheating, he would’ve pushed me away before we had sex, making excuses like “This doesn’t feel right” or something.

    If he only started feeling that way after having sex with me, then he shouldn’t have gone clothes shopping with me and unnie afterward.

    Besides, didn’t Woojin agree to have sex with me under the pretense of “practice” because he was into me to some extent?

    Insisting that unnie come along when we went shopping,

    sneaking up to me when unnie went to the bathroom for a bit—

    all of that happened because he had bad intentions, right?

    …Honestly, I kinda get it. Guys have those perverted fantasies about sisters and all that.

    You wanted to have your way with both unnie and me, didn’t you, you pervert?

    But now, Woojin’s beating around the bush to reject me.

    “…Did you suddenly get cold feet…?”

    Afraid unnie might find out about us.

    I couldn’t think of any other reason.

    Or maybe this is just some push-and-pull game I’ve only heard about…

    …But why play it with me?

    Shouldn’t you be doing that with unnie?

    What, am I your girlfriend or something?

    Grumbling, I furrowed my brows before eventually curling up under the blanket, hugging it tightly.

    “…Anyway, it doesn’t seem like he wants to cut things off completely.”

    The reason my thoughts went in this direction was because of the KakaoTalk message Woojin just sent.

    – You probably don’t feel like having sex with a guy you don’t like either, so don’t worry about it.

    That’s what Woojin just said.

    At a glance, it’s just a rejection, but if you look closely, there’s some oddly unnecessary wording in there.

    He could’ve just said “It’s fine” plainly,

    but instead, he added stuff like “a guy you don’t like”

    and “you probably don’t feel like it, so don’t worry.”

    It’s like…

    He’s rejecting me, but not too firmly, so I don’t feel completely shut down…

    That kind of vibe.

    Rather than interpreting this as “I won’t have sex with you,”

    wouldn’t “If you want to, I will” be more accurate?

    Or maybe “If you want to, I’ll let you have me”?

    …The latter might be pushing it,

    but still.

    Looking at it this way, it’s kinda cute.

    Like watching a middle school boy in front of his high school noona.

    Combined with my earlier guess—“Did you get cold feet because you’re scared unnie might find out?”—it’s a little…

    Starting to make sense.

    Hmm.

    “….”

    Anyway, this makes things easier.

    I just have to push hard for sex myself, right?

    You might not like having sex with a guy you don’t like,

    but since it’s not that unbearable, if I offer to sacrifice myself for your practice…

    “…No….”

    Now that I think about it, that’s kinda messed up.

    This doesn’t make things easier at all.

    Leaving some room for interpretation is one thing, but outright throwing myself at him would just make me look like a pervert.

    …Besides, that’d just ruin the fun.

    Whether it’s Woojin sneaking around to have me behind unnie’s back

    or me letting him have me behind unnie’s back—

    the guilt and tension of “Should I really be doing this with him?” is the best part.

    …Sigh.

    Either way, this is tough.

    Maybe it’s because my tastes are a little weird to begin with…

    Huu…

    [Lee Jiyoon] – Something expensive?

    [Seo Woojin] – Yeah. But don’t go expecting something ridiculously over-the-top.

    [Lee Jiyoon] – I know. I’m not that shameless…

    [Seo Woojin] – I’ve never been to fine dining either, but… that much is fine.

    [Lee Jiyoon] – Got it. I’ll look up the most expensive place around here later, so be prepared.

    [Seo Woojin] – Weren’t you just saying you’re not shameless?

    [Lee Jiyoon] – ㅗ (middle finger emoji)

    What should I do?

    While tapping on my screen, pretending everything was fine, my mind was spinning so fast I felt dizzy—

    Beep.

    A small sound from the door lock reached my ears.

    Startled like a hamster, I bolted upright from the bed, quickly sent Woojin a few more curse-filled messages, then lightly gripped my firmly closed bedroom doorknob.

    I’d already changed into fresh pajamas, so that was fine.

    My hair, which had been messy from lying down and masturbating, was okay now—just looked like I’d just gotten up from bed.

    If the other person was observant, they might wonder why I, who usually plays games until this hour, was lying down, but it’s fine.

    Because the other person is unnie.

    I know unnie best.

    “…You’re back?”

    “Eek…?!?”

    As expected.

    When I peeked my head through the slightly opened door, I locked eyes with unnie, who was sneaking in like a thief.

    Usually, when you’ve done something wrong or suspicious, you should act bold like nothing’s wrong, but…

    Unnie’s always been the one scolding me, so she doesn’t seem to know that.

    “Why are you greeting me at the door? That’s not like you.”

    “It’s not like I came out to the front door or anything… And you said the same thing last time.”

    “Anyway…! Last time, you suddenly popped out like this too and said the same thing…!”

    “…Did I?”

    “You did! …Haa… You scared me…”

    Exhaling exaggeratedly, unnie started taking off her shoes while slipping out of her fleece jacket.

    …Maybe it’s because I already knew unnie had been with Woojin before coming back.

    There were so many suspicious things about her that a small laugh escaped me.

    If she’d been out since morning, her hair should’ve been greasy by now—so why did it look perfectly fine?

    Why did an unfamiliar body wash scent waft off her with every movement?

    Why was she smiling so brightly every time her phone buzzed?

    …How annoying.

    “Why do you keep staring?”

    “At… at what?”

    Leaning against the doorframe, I spoke, and unnie immediately turned off her phone screen, fidgeting.

    For some reason, she sounded nervous…

    …Ah. Maybe it’s because I had my arms crossed when I spoke. Or maybe my expression was darker than I thought.

    Well, whatever. I don’t feel like overanalyzing.

    “Your phone. You kept looking at it.”

    “…Just someone I know.”

    “Woojin, right?”

    “…You knew, so why ask?”

    “Just curious. You were smiling so much I thought it was your boyfriend.”

    “…Was I smiling that much?”

    “Yeah. Enough to piss people off.”

    “…Hehe…”

    Did she drink on the way back?

    From nervousness to flustered to giggly—unnie’s mood swings were hard to keep up with sober, but I just shrugged it off and cleared my throat.

    …If only Woojin hadn’t given such a weird answer earlier, this plan would’ve been perfect.

    But I can’t just let this slide without doing something.

    I can’t just sleep peacefully after wasting this golden opportunity.

    “…So, why were you so late?”

    “Huh? Wh-what?”

    “Unnie, you texted me earlier saying you’d be late today.”

    “…O-oh… Right…”

    “So what kept you out so long? I heard you were meeting Woojin, but was there really that much to do?”

    “……”

    “You didn’t go to a PC bang or anything.”

    “……”

    “Did you go to a motel? Just the two of you?”

    “……”

    I was masturbating while listening, so I don’t remember the details, but contextually, it had to be a motel or Woojin’s place.

    Where else would they have been for hours, completely lost in sex?

    I kept my arms crossed as I asked, watching unnie’s emerald-green eyes dart around like she was in trouble.

    I kinda expected this, but…

    …This is hilarious.

    It’s not like I’m some naive little kid.

    Is it that hard to say you had sex with your boyfriend?

    …This is frustrating.

    I’ll just say it first.

    “…Guess you did. Your shampoo scent is different from ours. And honestly, it’s weird that your hair still smells like shampoo at all.”

    “Th-that’s…”

    “Stop stuttering and just say it. What, am I scolding you?”

    “…No…”

    “You had sex. With Woojin.”

    “…Y-yes… I did…”

    When I cut straight to the point, unnie finally nodded, fidgeting with her fingers.

    It’s frustrating,

    but also kinda cute.

    Maybe this is what Woojin fell for.

    …Maybe I should try being cuter too.

    Should I copy unnie, calling Woojin oppa and wagging my tail for him?

    Lost in thought, I continued.

    “…From after the academy until now?”

    “N-not that long…! Th-three hours…? Four…? …Five…?”

    “You really went at it, huh.”

    “Went at it…”

    “Yeah. Woojin must’ve been exhausted.”

    “Is… is that so…?”

    “Even in porn, most scenes don’t go past 30 minutes or an hour, excluding foreplay.”

    “Uuuh…”

    Unnie nodded obediently, hands clasped like she was being interrogated.

    Staring down at the top of her head, I casually added one last remark.

    “This is all because unnie only watches weird porn.”

    “…Wh-what…! Are you bringing that up again…?”

    “Yeah. I am.”

    “That was just a mistake in high school! I-I prefer something more romantic, not that rough…”

    “And you didn’t find it weird having sex for five hours with someone you don’t even like?”

    “……”

    “You thought that was normal?”

    “…I dunno…”

    Using unnie like this wasn’t part of the original plan, but…

    Woojin.

    This is your fault for not acting like a man.

    “I’m too anxious to leave it like this.”

    “…Huh?”

    “Next time you two meet, I’m coming too.”

    “…??”

    “Why that reaction? It’s not like I’m saying I’ll have sex with him instead of you. I’ll just sit back, eat snacks, and watch.”

    “…No, I mean… …Are you insane? Are you serious?”

    “…Dead serious. It’s not like I’d get turned on watching unnie’s body.”

    “…”

    “So? Yes or no?”

    “…E-even if I say yes…! …Woojin would hate it.”

    “Then ask him. Let’s see if he really hates it.”

    “……”

    “What’re you doing? Just send him a message.”

    “…It’s late today, so… I’ll ask tomorrow…”

    “…Fine. Then… Ngh… Good night, unnie.”

    “…Mm.”

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