"Hi oppa, can you help me win a bet?" Your girlfriend Yeji calls you suddenly one day.
"Sure, when and where?"
"Just come by Music Core afterwards."
"Okay, I'll see you then."
Yeji pulls some strings, letting you get backstage very easily. You knock on the door labeled "MC Yeji" and the door opens immediately.
"Hi oppa! I missed you." She greets you happily, her eyes disappearing into her smile.
"Missed you too." You made sure the door was closed before pecking her. "You were great today."
"Thanks, anyway, let's go see Minju!" Yeji says as she pulls you out of her dressing room and into the neighboring one. It is empty but for one person.
"Oh hi unnie! And hello, nice to meet you, Yeji unnie talks a lot about you." Minju gets up from her seat, greeting you with a courteous bow. Yeji is great, but your eyes can't help but roam Minju's figure, her thighs voluminous and her hips curvy, tapering off into a delicious midriff, currently hidden by her modest outfit, but you've seen her perform several times before.
"Nice to meet you too," you choke out as Yeji nudges you with an elbow.
"Yes yes, now you two have met. Minju, you remember our bet?"
"What? Oh, we haven't decided on what to bet on right? Loser has to do aegyo live?"
"Exactly. I've figured out a bet."
"Sure, let's hear it."
"You can't orgasm for a week, no touching yourself, nothing."
"Unnie!" Minju blushes, the demure part of her trying to maintain her image in front of you before her competitive spirit takes over. "That's too easy, make it a month why don't you?"
"Sure, a month it is then!" Yeji delightfully accepts. Minju mouth opens and closes, realizing that her gamesmanship backfired on her.
"Unnie!" she whines, but Yeji doesn't budge, simply smiling at back at her. Minju pouts before agreeing to the bet. "Okay fine, but you can't touch me either then, no squeezing my butt or whatever before we go on stage."
Her eyes shoot towards you. "And your boyfriend can't touch me either! That's why you brought him here right? Haha I'm on to you!" Minju delightfully fires back her conditions at Yeji, whose turn it is to be flustered.
"What- That's not fair!" she starts before being interrupted by you.
"We accept! And I agree to take part by the way, thanks for asking me," you pointedly say to Yeji.
"I knew you would." She tiptoes to whisper in your ear. "I wanted you to touch her and make her lose! What are we going to do now though?!" You wrap your arm around Yeji, and with a dramatic sweep pull her in towards you, kissing her passionately right in front of Minju. You slowly lean into her, making her bend backwards as she takes your kiss. Your tongue probes her lips, and Yeji allows you entrance, caught up in your sudden intensity. She tugs on your shirt, a small whimper escaping her lips the signal for you to finally break the kiss, leaving Yeji flushed and Minju even redder.
You hold Yeji close, nibbling her ear before whispering, "We'll just do that, I have a plan." You turn to Minju and feign surprise. "Oh sorry Minju, didn't know you were still here! Have a good day!"
You exit the waiting room with Yeji, leaving Minju dumbfounded and annoyed - day 1 done.
-----
Minju grumbles as she unlocks the door to her apartment. She was not expecting the bet to be that long, but fine, she doesn't touch herself that often, she could hold out. The audacity of Yeji unnie's boyfriend though! Kissing Yeji so hard in front of her, Yeji unnie looked so into it too...
No, don't think about that! Minju chides herself, taking a shower before slipping under the sheets.
Her thighs rub unconsciously in her sleep.
-----
Day 7, the next episode of Music Core was due to go live in 10 minutes - that's all the time you needed. You spy Minju leaving her dressing room, and you drag Yeji into the freshly vacated room.
"Oppa what are you-" You crush your lips against Yeji's, aggressively planting her in front of the mirror, your hands roaming her body, pinging all her erogenous zones one by one as she naturally wraps her legs around you. "What are we doing? I have to go on soon!" Yeji whispers in your ear, but her body doesn't let you go.
"It's my plan to make Minju lose, you want to win right?"
"Yes, and I am loving this plan of yours right now." Yeji smiles and goes back to kissing you, her hands now in your hair, desperate to pull you deeper into the kiss. That is, until a surprised shout comes from behind you.
"Ah! What are you doing in my dressing room?" You smirk and look at Minju's stunned expression through the mirror. You back away from Yeji, allowing her to get off the dressing table. You make no effort to hide your erection.
"Oh, sorry Minju, we got carried away, we must have gotten the wrong dressing room."
"I know what you two are doing, it's not going to work!"
"We're not doing anything, I just can't keep my hands off your Yeji unnie here."
"And I can't keep my hands off oppa, he's so good with his hands... among other things," Yeji finishes with a wink.
"Fine whatever, unnie we have to go live soon!"
"Oh okay, let's go then, bye oppa!" Yeji blows you a goodbye kiss before following Minju out the door. Back in Yeji's dressing room you watch the two of them on stage, both their faces redder than usual. A short while later they finish their segment, and Yeji bursts into the dressing room, launching herself at you with a fervent kiss.
"Babe? You have to go on again in a bit!"
"I don't care, you can't leave me hanging like that." She looks to the monitor. "You have three songs, fuck me!" You loosen your pants and drop your boxers while Yeji pulls down her safety shorts and slides her panties off, kicking them away quickly. You push Yeji against a wall - a wall that separates her dressing room from Minju's. You indicate to Yeji that she should turn around, and as soon as she does you press her against the wall with a not-too-gentle slam, no doubt making a sound.
"Oppa that's too loud!"
"Exactly." With a gasp from Yeji you slip inside her already dripping heat. "I won't leave you hanging, but imagine how Minju feels when she hears this!" You pull back before pushing in with a slam, pressing her against the wall once more.
-----
What is that sound?! Minju thinks, annoyed at the distraction.
The knocking is rhythmic, and her face begins burning when she realizes it is the wall between her and Yeji's room.
"Are they-" she says out loud before hushing herself, as if afraid that they would hear her. She puts her ear to the wall - Yeji's groans make their way through the thin wall, making it clear what she was up to, in the middle of Music Core too!
How good is he, to make Yeji unnie want to do this even now? The lecherous thought enters her head as the knocking seems to have become more persistent, the pace increasing with Minju's own heartbeat. Surely they must be finished soon!
"Cum in me!" Muffled as it was, Yeji's desire flows clearly through to Minju, and her ear is glued to the wall as the session reaches its climax. With a much louder knock on the wall it all stops, and Minju can hear his grunts through the wall, no doubt filling Yeji with his thick seed- No! Minju shakes her head, she has to stop thinking about that!
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