Chapter Index

    I know this house has poor soundproofing. I know. But I didn’t think Jiyoon would wake up from it… Jiyoon and I haven’t really had this happen before, so was Jiyoon always such a light sleeper? No, that’s not right. When it was just us, we’d always do it until we were exhausted and fell asleep naturally, so maybe she always passed out into sleep. And now that I think about it, the sounds of sex seemed quite loud…

    “So that’s it… You two are like that… I did think you were especially close with Senior Dabin…” “Th-that’s…”

    Unfortunately, there’s no time for regret. And no strength for it either. Because of this damn alcohol, my train of thought kept getting blocked here and there. The good news is that Jiyoon is also muddled with the smell of alcohol and intoxication right now, so if things go well, she might not remember what happened now by tomorrow…

    Peeling my gaze away from Jiyoon, who was coming to her own conclusions, I first checked on Dabin and Woojin. Dabin… was hopeless. It was clear how good the sex had just been; even with Jiyoon watching, she was still breathing heavily. Earlier, she had even insisted on getting dressed because she was embarrassed… but now, as if she had no time to care, she was openly showing her wet vagina, covered in arousal fluid, with no attempt to hide it. Her thighs, still twitching with the lingering afterglow of sex, were also all too visible. At this rate, the probability of being able to hide what Dabin had just done was close to zero.

    With that, I closed my eyes tightly once before turning my gaze to Woojin. Woojin… had a look of utter despair, just like me. Not that he was closing his eyes like I had just done, but “dark” in the sense of a look of devastation. That kind of expression.

    Of course, he would. Actually, this was just a one-night tryst I had allowed. And to explain all of this, I’d have to tell her everything that had happened between us…

    The fact that Dabin had secretly had a crush on Woojin. The fact that while we were sleeping, Dabin had secretly been raping Woojin. The fact that due to a combination of various reasons, I had decided to allow the two of them to have sex just for today, using alcohol as an excuse. For Jiyoon to understand, I’d have to tell the story neatly from beginning to end…

    Argh…

    “…” Gulp, I swallowed hard, praying this was all a dream. And praying Jiyoon’s memory would black out, I spoke. “…Don’t ever tell anyone else. Got it?”

    “Of course not… Who on earth would I tell this to?”

    “…Then that’s a relief…”

    ‘A senior who tried to secretly rape her friend’s boyfriend while everyone was asleep and got caught’ is worse than ‘a senior with a slightly peculiar taste,’ right?

    Of course, the fact that she recently broke up with her boyfriend might seem a little strange to Jiyoon… But as long as we keep it a secret among ourselves, only Jiyoon in the whole world would feel that way.

    …It’s fine, right?

    “So you were sex partners… I see…”

    It would have been great if it had ended like this.

    “…? Why, why are you coming this way? Stop looking and leave!”

    “Huh…? Oh, I just have a few questions…”

    “What on earth is there to be curious about… Hey, I told you not to come in!”

    “I’ll leave right after you answer. Okay?”

    “No, but still…”

    Seeing Jiyoon, after hearing the answer, close the door and come in instead of closing the door and leaving. Unfortunately, it seemed there was still a bit left before I could catch my breath.

    “Were all three of you just doing it…? …Sex?”

    “…”

    “Not going to answer? Then…”

    “…”

    “Hey, Seo Woojin. Were you just with three…”

    “No, not three of us were doing it… For now, just Dabin and Woojin…”

    “So Unnie was just watching from the side?”

    “Well… actually, I was the only one who kissed…?”

    “Aha. So Unnie was just sucking on tongues, huh…”

    “Just sucking on tongues…! Ah, anyway! Just leave quickly… I’m embarrassed, I told you…”

    Oops, it was late at night, and I almost spoke too loudly. Quickly lowering my voice, I stood up and blocked Jiyoon’s path. More accurately, rather than blocking her, I tried to push her out to the living room.

    It was absurd enough that Dabin and I were doing this together, but for Jiyoon to even watch this? Isn’t this a bit much? She must be drunk and acting strangely too. Otherwise, there’s no way to understand this persistent Jiyoon right now.

    So, just as I was about to really try and kick Jiyoon out to the living room with a bit more seriousness.

    “…Unnie.”

    “What is it… Now what…”

    “…Then doesn’t Seo Woojin like Senior more than Unnie…?”

    “…?”

    “…Why did Senior go first?”

    Jiyoon, who tilted her head slightly towards me, whispered strange words. I, too, quickly began to explain, keeping my voice completely low.

    “N-no, Dabin just went first. Why does that mean anything…”

    “Because it’s suspicious… No matter if Senior is a sex partner, Unnie is the girlfriend. Shouldn’t Unnie naturally go first?”

    “What does that matter…”

    “Of course, the girlfriend should go first, right…? Even when you do it with me normally, this kind of desire…”

    “Wait, wait a minute… Watch your words…”

    “…Ah, okay…”

    “I told you, it just happened… Just… It’s resolved now, right?”

    “Hmm…”

    It was a truly ambiguous reaction, but I, who have lived with Jiyoon for 20 years, knew. It meant, ‘I don’t understand what you’re saying, and it’s not resolved at all.’

    Well, Jiyoon and Woojin have a lot of sex too, so even if it seemed trivial, she couldn’t help but be bothered by it.

    But the reason it looked like Dabin had gone first just now was because of the secret we shared moments ago. Since I’d already told a lie, I couldn’t explain it accurately.

    And if I reveal the truth honestly now, that would be a problem in itself.

    …Then what excuse on earth should I make? Would she believe me if I said we decided the order with rock-paper-scissors? Or some other excuse…

    Ugh…

    “…What’s this…?”

    “…”

    It was then. Because of Jiyoon’s reaction, my gaze naturally followed where her finger was pointing. It was what I had also noticed just a moment ago. The condom, full of semen, after Dabin’s sex.

    “…Why did he cum so much?”

    “…”

    Jiyoon’s remark, as if she knew Woojin’s ejaculation volume, was clearly wrong. It was too careless a remark with Dabin right there.

    But as I continued to think about it, a man’s approximate ejaculation volume could easily be figured out just by watching a few adult videos. It was a remark that could easily be made even with Dabin present.

    So my attention was naturally drawn elsewhere. …To the question, why did he really cum so much this time? With the same foolish curiosity that had bothered me at first.

    “Hey, Seo Woojin… What is this?”

    “It’s just because I didn’t do it during the day. …And as Unnie said, please leave. I’m fine, but Dabin is clearly uncomfortable.”

    “Her eyes are still unfocused, so what’s there to be uncomfortable about? And just because you didn’t do it during the day… You’ve never ejaculated this much before.”

    “How do you know that?”

    “Because it’s noticeable when I throw out the trash?”

    “How could that tiny thing be noticeable?”

    “How could it be noticeable? Think about the number of times you and Unnie have sex a day, you idiot.”

    “…”

    “The trash coming out of Unnie’s room, it’s all condoms these past few months, you know? It used to just be snack wrappers.”

    Sexual chemistry, there was a saying like that. My friends emphasized it immensely. ‘When you meet them, they have really strange habits.’ ‘Their personality is worse than I thought.’ ‘Their food preferences completely don’t match mine.’ Even with such minor differences, if the sexual chemistry is right, it’s worth enduring and dating them… something like that.

    …So, think about it? Dabin, having done it with Woojin for the first time, felt so good and the afterglow lingered for so long. And Woojin also released such a large amount of semen inside the condom. Doesn’t that mean they both felt unbelievably good… Isn’t that right?

    “…You don’t mean, you feel better doing it with Senior Dabin than with Unnie…?”

    “…”

    …Could that really be true? Indeed, Dabin is tall and has an incredibly beautiful figure… So from a man’s perspective, did it feel better during sex…?

    “Stop saying strange things.”

    “After doing something that causes misunderstanding?”

    “…You seem very drunk right now, so drink some cold water and clear your head.”

    When I do it with Woojin… it feels incredibly good. Woojin deeply pushing and stirring inside me, it genuinely feels good. Having soft and slow sex late at night like this also feels completely good. Being pounded into repeatedly while he says ‘I love you’ dozens of times. Having him ejaculate deep inside me while his tongue was wrapped around mine for a long time. It truly feels good.

    Then, simply thinking about it, Even though doing it with you feels this good to me, From Woojin’s perspective, using Dabin’s vagina might have been… Much better──

    “…Then let’s do this.”

    ──Could it be. As I was lost in thought, Jiyoon’s hiccups, muddled with the smell of alcohol, reached my ears.

    “Then we can just do it with Unnie right now and compare the ejaculation volume. …Right?”

    “…”

    “…”

    “…”

    Right behind me, Dabin’s hiccups were heard as well.

    “Ah, of course, since this will be the second time… we’ll just roughly account for a slight difference. …Right?”

    “Wait… We agreed from the start that Dabin could do it multiple times… And my head hurts because of the alcohol right now…”

    “…So you’re not going to do it, Unnie?”

    “…”

    “You’re not doing it, right?”

    “…No, that’s not what I mean…”

    “Are you going to do it?”

    “…”

    “Now that I think about it, there are condoms in Unnie’s room… Oh, since you did it with Senior, are there any already opened?”

    “…”

    The thought ‘there’s no getting through to her’ lasted only a moment. With a cute little grunt, Jiyoon placed her butt on the edge of the bed and skillfully pulled out a condom.

    I wanted to give her a hint that she shouldn’t be so good at such things, but it happened too quickly, so it was already spilled milk. All that was left was to hope that both Jiyoon and Dabin’s memories would black out and they wouldn’t remember today’s events.

    “…Hey. Seo Woojin. Stay still…”

    “Just give it to me. I can handle that much.”

    “Why are you doing it…? In porn, they all do it like this… The woman who’s about to be fucked puts it on for him…”

    “…”

    “And Unnie…”

    Perhaps because she was drunk, Jiyoon’s words, a little more slurred than usual, Soon turned to me.

    “Don’t just stand there, take it off. Quickly.”

    “…Alright, alright…”

    “And the loser… a penalty?”

    “Ah, come on… Stop saying strange things…”

    …Despite being completely drunk. What was so fun about it? With a bright smile that was unlike my sister.

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