Eavesdropping (3)
A clack—the sound of a phone being set down—never came through the speaker.
Woojin's phone sat a little too far off to catch a noise that quiet. Even without it, she could picture well enough what was happening on the other side.
Lee Hayun, the one who'd fired that Kakaotalk off to her in a rush. ...No. Her sister set the phone down and started pawing at the box of condoms. She fished out one that looked like a vitamin pill and, carefully, carefully, rolled it down over the thing being held out in front of her—Seo Woojin's cock. All so she could get fucked on it all night long without a single worry about getting pregnant.
"A-ahem, khm...! C-come here. ...I'll put it on."
"It's right in front of you."
"Th-that's what I meant...! ...Hik..."
"Th-there, um... I-I think it's on..."
"It's on, so... ...Lie down properly now."
A brief quiet, and then the rustle of bodies shifting started up again. Thanks to that, the scene over there drew itself sharp and clear in her head, even while she was busy masturbating, slick and wet.
"H-hey...! That hurts...!"
"You throw your body around every day. How is this the part that hurts?"
"Being flexible is a different problem... ngh..."
A first time, and her sister had gone rigid with it. Seo Woojin pressed her thighs open anyway.
"Uuugh... seriously..."
Too ashamed, her sister hid her face behind her own arms. Rather than forcing those arms apart to check her expression, Woojin laid his cock across her lower belly, the same way he had with her.
"...Whoa. Whoa..."
Her thighs shivered, and in the end she lowered her arms a little and stole a glance downward. Onto that lower belly, just under the navel—after he'd smeared a thick coat of condom lubricant over the panties bunched and draped beside her entrance.
"Nnghk... ugh..."
"Relax. I can't put it in if you're this tense."
"I-I'm not tense... it just... hurts..."
"It's fine. Pain's normal... ...Bear it."
"Just telling me to bear it is so irresponsible... hak..."
"...You get hurt all the time. Pain ought to be familiar by now."
"That's... not the saaaame..."
Seo Woojin started breaking in her sister's virgin pussy however he pleased, tense as she was for that first thrust. The two of them shoved themselves into her head as if he'd driven the image in by force. ...Well. The only thing she could actually be sure of was herself, face-down on the bed, busy scraping at her own walls along with the fantasy. It was fun, wasn't it? A fantasy like this. ...And it got her horny.
"...This is about halfway, for now. ...How is it? You okay?"
"I'm o-okay..."
"You said it hurt a second ago. You really okay?"
"...If I say I'm not, are you going to stop there...?"
"For now."
"...Then I'm okay..."
"......"
"You—you can pound me however you want... idiot..."
She'd always thought it was a little bit of a cute voice, and still secretly hated hearing it, because in ordinary life it never did anything but nag. In front of Seo Woojin it turned into nothing but aegyo. Much closer to a little sister than to an older one. ...Closer still to a little sister who was nothing but a lump of lust.
"However I want?"
"......"
"Then it's fine if I slam it in to the root? Hard?"
"...Y-yeah..."
Pfft... Lee Hayun, you crazy bitch.
She said it was fine even if he put it in to the root. From what she remembered, that thing cleared twenty centimeters without even trying. Hunt down nothing but videos of huge cocks day after day and you lose all sense of reality, apparently. Get sincerely fucked by something like that all night, and how exactly was she planning to show up at the academy tomorrow? What, going to declare her own national holiday? Suddenly claim her body hurt, and lean on an excuse like that?
Too bad. There was a Healing Transcendent on the premises, and an excuse like that would never fly. ...Better to come to school with her neck covered in hickeys. Everyone would hush it up then. She must've been getting laid all night.
"If I go in that deep, it's going to hurt more than it does now."
"L-last time, with you... mmph... fuhp..."
Last time, she says.
The dazed, passing talk cut off, and a wet kiss started up again. And between the sweet sounds of that kiss—
"Nnghk... chup... huuk...?!"
The smack of soaked flesh meeting flesh, the soft leak of air between lips, slipped out past the phone's speaker and tickled her eardrums. ...Was Woojin really putting it in all the way to the root? Was her sister really breathing out those strange sounds because of it?
"Mm... haa... Seo, Woojin... stop kissing..."
"...Hard? Breathing?"
"Mmm..."
A voice thick with aegyo, the kind sisters never really had occasion to hear from each other, spilled out over speakerphone and faintly filled the room. It made it feel like... like her sister and Seo Woojin were having sex right beside her. Or like she was hidden somewhere, peeking at the two of them. A very strange feeling.
"...Still. You're not saying it hurts anymore."
"......"
Sunk deep in that strange feeling, she gave up lying on her stomach, rolled onto her side, and simply went on touching herself everywhere she could reach. Would Woojin have treated her that tenderly if the one over there had been her? If it had been her, wouldn't she already be getting pounded like an animal, the way Unnie liked it? And didn't that mean, right away, that she turned him on more? Fantasizing however she pleased.
"Want to keep going like this? ...Or we could change positions."
"L-like this..."
"...You're only saying that because later I might pin your thighs so you can't move and slam into you. You sure?"
"Eh, uh, um..."
"If you don't want that, just from the side, or from behind..."
"N-no... I didn't say I don't want it..."
"......"
"Ah, I flinched..."
Didn't it mean she turned him on more than her sister—her sister, whom he couldn't treat roughly right away because they were lovers, versus her, whom he could handle as freely as a toy under the excuse of practice? Fantasizing. Defeat masturba—
....
She was only doing v-victory masturbation.
"Wait... ah, ugh......"
A thin hiss of friction, as if he'd dragged her sister's body in against his own. Not a wet smack anymore, but puk, peok, puk, puk. Sex sounds loud enough to pack her room full. Nnghiik... A vulgar moan, busy leaking out between her sister's clenched teeth. She took all of it into her ears, folded one leg neatly open, and worked her fingertips hard over walls that had already come so much they were going numb.
"...Hayun. Stop covering your face."
"How... am I supposed to not cover it...! Because of you, because of you......"
"Crying, smiling, wrecked—whatever face you're making, it'll turn me on, so put your arms down."
"No... i-it's embarrassing... kyah...!"
"...Ah. Fuck."
".... ...... Hiee... ...nnghk. W-wait... that's too rough..."
Why. What kind of face had her sister been making, for him to sound like that. Why had the sound of his cock slamming in gotten so much faster than before. ...And why, since a while ago, had her sister been spilling nothing but those strange moans.
Squeezing nipples that had gone stiff enough to give her chills, she hurriedly looked toward the mirror in the corner of the room. Unfortunately her face wasn't visible from this angle, so she staggered up and dropped backward onto the bed, glancing over. Only then could she see it—her own face, ruined to pieces. Tears, as if she'd been crying. A flush, as if she were ashamed. Pleasure, as if it felt good.
"Mouth. Open wider."
"Heeh...? Heh...?"
"Not just poking the tip of your tongue out and panting. Open it properly."
"...Aaaah..."
A faint tenderness had been there from the start. More than that, now, the voice sounded thick and heavy with lust. After her sister's aaah—the sound of a mouth opening—every noise stopped for a very short while. ...She had no idea what they'd been doing. It seemed like she'd heard a gulp, several times. But then chup... chup... the sound of him pounding her while they kissed, sloppy and wet, started up again, so her sister must have been doing something to get his cock hard. Ahaha...
"...Fwhaa... Hey, Woojin... Woojin..."
"What."
"Unnie's come too much... right now my head's gone blank... just a second, let me rest..."
"...How many times did you come?"
"Five, no, six... ...nnghk... s-seven..."
"......"
"Stop pounding and—! Listen to me..."
"I'm this stiff, this hard. How am I supposed to rest."
"Even so... I can't even get words out right now..."
The slap of him driving into her pussy drowned her sister's voice completely and abused the speaker of her phone. The cute, lewd moans that followed were buried under the vulgar noise of sex in progress. Her too—surely she'd been taken by Seo Woojin with that same feeling. Remembering the old time they'd mated bent over a desk... remembering how she'd only been able to moan as much as she wanted after she'd frozen her headphones and shattered them, she burned so hot it felt like her mind was crackling apart. She even forgot she'd already hit mute, clapped the back of one hand sloppily over her mouth in a cover that did nothing at all to stop the sounds, and rubbed her clit like a madwoman until she sprayed her slick all over a towel that was already soaked through.
"I'm coming, I'm—coming again, I said..."
"I know. I can feel your insides writhing like crazy."
"Th-then why did you ask earlier...!"
"...Hearing that kind of thing straight from a woman turns me on more. Idiot."
"Uuugh... d-don't tell me making me call you Oppa is also..."
"It's a little different, but... roughly that."
"You... pervert...! Complete pervert...!"
Even while her sister and Seo Woojin, still in the middle of it, caught their breath and traded words. Slick, slick... slick. She was sunk too deep in masturbating for any of it to reach her ears.
"You, walking around every day with your shoulders squared, acting like the big sister, hesitating and calling me Oppa. You have no idea how much that turns me on."
"Wh-what's hot about that...! Rather—huh? Ask me for a fe... a fellatio or something...!"
"You don't like calling me Oppa?"
"...It's not like I hate it..."
"Then use it at times like this. ...Like when you're making me come."
"C-come..."
"I told you. You hesitating, talking all polite—that turns me the fuck on."
"O-okay. I get it, so stop saying looking down at me gets you hard...!"
Until her vision went pitch-black. Until nothing was left in her head. She buried her face in the soft blanket, choking off her own breath, and kept going—vulgar, and thrilling. ...She didn't think she'd ever masturbated for this long. This call... shouldn't she have recorded it, and used it again and again? An opportunity like this wasn't going to come around twice.
"...O-Oppa..."
"......"
"...Come inside Hayun as much as you want... come... nnghk......"
Could she do "sex practice" with Seo Woojin again? Thinking that. Slick. Slick. ...Then a thin spurt, and another.
"Hek... heeek...... ...Crazy bastard... stop coming..."
"It's fine. A condom won't break from this."
"Not that...! Th-the condom, it's all swollen, it keeps hitting my womb..."
"......"
"...Okay, okay...!"
She pulled out fingers soaked in her own slick, the ones that had been scraping at her walls, turned her back on the phone, and let out breath after ragged breath. The thing she'd called victory masturbation, after stealing her sister's boyfriend first. Somehow, thinking about it now, it just seemed like defeat masturbation. ...Woojin's goal had been met, too, so there probably wouldn't be any more sex with him. Enjoying her embarrassing tastes—that seemed over now as well. Nothing left but hazy breaths, packed tight with the feeling of defeat...
"......"
...No. Why did it end here? Ways to meet Seo Woojin behind her sister's back. And ways to have even sloppier sex than her sister. Those were still left.
...Leave a Kakaotalk like that, and she could have an affair with him behind her sister's back whenever she wanted. So long as Seo Woojin didn't refuse... that is.