Eavesdropping (2)
A house with no one left in it but me. Any other day, this would have been prime time for grinding games alone… or, with my sister gone, prime time for clamping on a headset and grinding out a long, devoted session of masturbation instead.
Beyond the phone screen stamped 7:34, I listened to the sounds of my sister being loved and drove my straightened fingers in—press, press—deep into my cunt.
"…Mph. W-wait…!"
"…Why?"
"You just… naturally ending up on the bottom—nnh—that's not fair…!"
"Not fair…. …Then what is it you want to do?"
"What do I want…. Hmph."
I dropped face-down on the bed as if I were prostrating myself. Into that sticky, warm hole I sank my thin, long fingers all the way to the root, curled the tips like a hook, and scraped along my walls—hard, rough, relentless.
"Nn…, mmph…, hnn…."
A light climax had me planting my face in the sheets and shivering for a moment. Then I dragged over the blanket I'd shoved aside, bunched it up thick beneath me, and squirmed my way on top of it, wriggling just the way my sister must have been wriggling on the other side of the phone. Those two were probably tangled together in exactly this position.
"Pff-heh…. Sure enough, once I've got you laid out, you're nothing special."
"…Does beating me at just that one thing put you in such a good mood?"
"Yeah. An amazing mood, actually. Well? Do I look a little like your noona now?"
"Hard to say. I don't really get a noona feeling from you even on a normal day."
"Ha?"
"Wow. You're the first person I've actually heard say that out loud."
My sister bristled and yowled like a cat with her fur standing on end, apparently not fond of Seo Woojin's answer. And unlike her, Woojin seemed somehow gentler than usual. When he had sex with me in this room he was that rough, but in front of his girlfriend—my sister—he was awfully sweet. Listening to the two of them flirt in voices I half understood and half didn't, I wadded a wet towel into the gap between my crotch and the blanket.
"…Hmph. Looks like noona's going to have to punish you herself…."
"Is that a line you saw in some comic? Why are you talking like that?"
"S-shut up…! I'm not copying something I saw somewhere…!"
"Okay. Now you sound a little like Hayun-noona."
"Grr…."
"Pfft. Look at your face."
My clit was already slippery with slick and hard enough to ache, and I scolded it without mercy with my fingertips. Woojin, lying on the bed with only his upper body slightly raised. My sister climbing on top of him, wearing a confident look. Woojin gazing up at her and laughing, bright and easy. My sister looking back at him, ears burning red, and starting up her yowling complaints all over again. I sketched that fantasy in loose, messy strokes from nothing but their voices, and busily splattered my arousal across the towel that was already soaked.
When Woojin was with me, there was none of that kind of talk. It was just sex, piled on sex. Maybe if we were showering together in the bathroom—but on the bed, all he did was slam his lower stomach into my ass, thud after thud, until every last bit of his lust was wrung out. If he spent time that sweetly with my sister, did that mean my body turned him on more than hers did?
…Heh heh.
"Noona. It's all right if I just hold you, isn't it?"
"That's you trying to treat me like a doll…!"
"No. I'm treating you like my girlfriend."
"Wh-what…."
"…I shouldn't have turned the light off. With only the night-light on, it feels like a waste."
"Wh-why would you turn the light on, that's embarrassing…!"
"When you stammer, your face gets really cute."
"……."
There's a phrase for it—loser's jerk-off. This was different. This was… wouldn't a winner's jerk-off fit better? Mm-hm. That was the one. I'd kissed him before my sister did. I'd had sex before she did. I'd already enjoyed all of it before she did, and now I was masturbating like this…. Not some pitiful session steeped in defeat, but one buried deep in the dopamine of having won. A winner's jerk-off. That was right.
"Mmph…, haah…. W-wait…."
My sister, too flustered to get her head on straight, ended up in Seo Woojin's arms and started kissing him. I imagined that sister's swaying ponytail, the filthy sounds that would be hammered straight into her head, the ears that would be dyed red, and I scraped hard at the deep place inside my cunt.
"H-hey…! Why do you keep kissing my neck, it tickles…."
"…You don't like it? We showered together earlier. …Ah, a mark won't show from just this much anyway…."
"It's not that I don't like it…. …I just…. On the—on the lips is more…."
A shampoo scent that wouldn't be her usual one. A body-wash scent that wouldn't be her usual one. I already knew that what I'd be able to smell before long would be Seo Woojin's scent. From my entrance, held open by fingers spread in a V, strings of slick drooled and dripped.
If I sidled up and sniffed at her once she came home, what kind of reaction would she give me? She'd jump out of her skin and bolt for her room, wouldn't she? If I pressed her, all casual, about the shampoo, she'd dodge my eyes this way and that and try to mumble her way out of it. The reaction was so obvious I already wanted to tease her….
"Mmmph…. Mmh…. Mmph…?!"
Hnn, hah—I was scolding my clit like crazy with my fingertips, letting the fantasy run on, when a lot of paper-crinkling rustle started mixing in past the wet sounds. At first I wondered what that noise was, but it didn't take long to figure it out. My sister and Seo Woojin. If the two of them kept kissing, what else were they going to do? Have sex. Obviously.
"I'll take your shirt off, so stop clinging and open your arms a little."
"……."
"Hurry. You put your clothes back on because you got embarrassed when you thought about it earlier, remember."
"……."
"…That's it. Just like that."
A shirt? What had my sister been wearing? Right—the academy uniform. She'd gone out without changing. At the same time, my gaze, buried in the blanket, flicked briefly to the hanger on the wall. …If I ended up doing "sex practice" with Seo Woojin again, should I wear the uniform on purpose next time? So he'd remember the first time he had sex with my sister. And so, in the end, he wouldn't be able to help comparing me and her. Honestly… I didn't think I'd lose to her.
"Are you going to do it with the T-shirt still on?"
"…Nnh, y-yeah…."
"It'll be uncomfortable. The smell will soak in. Your underwear will chafe, too."
"H-how would you know. What, are you a girl?"
"Just in case. Just in case. And if you go home and Jiyoon catches all those smells on you, you'll be embarrassed."
I'd been imagining a sweaty, sopping uniform-sex session with Seo Woojin when my name suddenly came up from the other side of the phone. Because of that, every nerve of mine locked onto the call that had, until then, only been dully tapping at my eardrums.
"Her—she'll be in her room gaming hard even after I get home, so it's fine…."
"You never know. The timing might line up, and she might come out to say hello to you."
"…Well, sometimes she does…. Nngh…."
That was definitely something he was saying because he thought I was listening. Your sister's going home today covered in the smell of sex, so have the sense not to come out of your room.
"……."
But why did it also sound like this? I'm going to fuck your sister plenty, mark her, and send her back. So instead of wasting time on games, come outside and get a smell. Why? …Was I just that much of a pervert? Really?
"Or my clothes are here, so you could wear those."
"…Your clothes?"
"Yes. You don't want to because the size is wrong? They'll be a bit big."
"Th-that's, n-no. I want to wear them…."
"You're being more obedient than I expected this time."
"I-it's a guy thing, right…. A girlfriend in her boyfriend's shirt… that kind of thing…."
"…Ah. That's what you meant."
Guessing at Seo Woojin's inner thoughts however I pleased ended there. In its place, I swapped the clothes I'd been dressing my sister in, inside the fantasy, for Seo Woojin's—a little loose and baggy on her. Just looking at my sister's face, she was definitely on the cute side, so a boyfriend-shirt look would suit her, just like she said. If not that, then an oversized boyfriend sweatshirt. Or a floaty set of boyfriend pajamas. That would be nice too. Which meant next time, I'd have to steal Seo Woojin's infirmary coat and wear it. As much as my sister's scent soaked into his everyday clothes, when he was at the academy… so he could breathe in plenty of mine.
"Here. Put this on. It definitely looks big, but… it suits you."
"……."
"…Should I keep my eyes closed?"
"…Yeah."
What on earth had my sister put on? What on earth would she be wearing when Seo Woojin fucked her? Would he like it as much as he liked sex with me? Would he say it felt good, and then quietly… let out a sigh packed with disappointment? Sex with Lee Jiyoon felt so much better…. Something like that, more or less. Using the rustling through the receiver as a side dish, I scraped at my walls hard enough to stop my breath—for a little while. …And then, at some point, the sound of shifting stopped.
"……Eh…."
Thinking the call might have dropped, I got up unsteadily and checked, but that wasn't it. On the phone screen, the time stamped 10:22 was still ticking forward, little by little. What. I'd been right on the verge of coming, so why all of a sudden…. I was fine, so was it a problem on their end? Dead battery, maybe? Hmm…. Then the call ought to end, shouldn't it. …Hah. Whatever. I'd have to have actually called people a lot to know this stuff. It was basically just a YouTube machine—how was I supposed to know? I let out a sigh thick with regret and swept my bangs back with one hand. They'd gotten a little mussed from planting my face in the bed and masturbating so hard just now. I was glancing between the computer I still hadn't turned on and the towel, in place of the phone that had been nothing but obscene noise, when it happened.
"Nnh, hik……. W-wai…."
From the other side of the phone, the wet sounds started ringing out again in full. But it was a little different from before.
"…Your legs. Spread them a little more."
"Th-this much is enough, isn't iiit…!"
"I'm only saying it because it feels like my wrist is going to snap."
"That's—that's just how it…."
"…Thighs. Spread them."
"J-just wait……."
Unlike a moment ago, when it had been noisy with what anyone could tell was kissing, this time the wet noise never once stopped, even while they were talking outright. …So he was probably holding my sister from behind…. ……. …. Whoa. That sound….
"…Is this why you said earlier you wouldn't take your panties off?"
"No, I mean, yeah…, …no, no, not exactly…."
"Why. You're already soaked as fuck. It's stupid hot."
"Eep…. H-hot, what's hot about it…! Being s…soaked is embarrassing…!"
"This didn't happen just from kissing me. …You want to have sex."
"…Nnnn…."
How wet did my sister have to be for sounds like that to come out of her? Even I, wet enough that it was running down my thighs in trails—even I, so busy scraping my walls while I eavesdropped on the two of them—didn't make squelches that loud.
"…The hem of my shirt you're wearing right now. Hold it in your mouth, just a little. So it doesn't get in the way."
"……."
"Come on."
"I-I'll just hold it aside with my hand…."
"Hold it in your mouth."
"……Hahp…."
Yeah. Good girl. She liked it when someone was forceful. The porn I'd caught her with was the kind where a cock got pounded in without a shred of mercy, so she'd like this. Proof: she was moaning around the shirt, mmph, mmph, all worked up. And since a tiny little shiver-sound had slipped into the squelching, her thighs were probably trembling too, right? Heh heh….
"…Hah…. Lee Hayun, seriously…."
"Haaah…. Hah…. Hah…."
"Hold on…. The drawer, fuck…."
Telling myself the fingers raking my cunt were Seo Woojin's, telling myself the blanket steeped in my own scent was Seo Woojin's arms, I kept masturbating—and at the end of it, Woojin started letting out a voice aimed at my sister, excitement packed tight inside it. I used that voice as jerk-off fuel and stuffed my pussy, hard and deep. Fantasizing that even this voice was spilling over me. Squelch, squelch.
"These condoms, there's three in a box, y'know? …I mean—yes?"
"Con… nnh, mm…."
"I've got more besides these. How many boxes do you want to use? …Tonight."
"……."
No. Idiot. If he'd pushed to put it in raw, my sister would have pretended she hated it, pretended she had no choice, put on that coy little act, and then she would have taken it. Pregnancy was whatever—just take the pill on schedule. Once you unlocked no-condom sex a single time, after that….
"U-um…."
"What?"
"H-how many boxes… do you have…. …sir."
"……?"
"Y-you just used casual speech on me…! You d-did… …sir."
"……."
"A-anyway, how many boxes are there… …sir."
"Enough to last all night."
"…A-aha."
"……."
"U-um. Wait a second…."
…Lee Hayun. That crazy fucking bitch. So that was the kind of play the two of them did when they were alone. Calling him oppa on the street earlier—she could only do that because she'd already tried it. I was rubbing my clit with the tip of my middle finger when the phone vibrated, loud.
"……."
…Lee Hayun. That crazy fucking bitch.