Work Text:
Seulgi didn't know how she had been convinced to play this game.
Well actually, she did.
Jaeyi. It was always Jaeyi.
Every day they spent together, every class sitting next to each other, every late-night study session in her dad's hospital, she found it more and more difficult to not immediately concede to her.
Which is how she found herself agreeing to spend the night at Jaeyi's house. She hadn't the courage to deny Jaeyi's invitation, not because she was afraid Jaeyi would be angry with her, but because she felt that she couldn't not miss out on such an opportunity. She realized more and more that Jaeyi was full of surprises, always finding a way to spin Seulgi's perception of her in a completely new direction. Maybe she got off on it. Maybe it was all an act.
Regardless of all of that, Seulgi's own curiosity burned so hot that she would have likely followed Jaeyi off of a cliff, if she asked nicely enough. It was, in a way, a sickness—Seulgi knew that. Jaeyi was growing on her like a fungus. Or maybe it was the other way around.
She was surprised to admit this to herself. Maybe it was because Jaeyi brought beer. Maybe Seulgi had anxiously drank a bit too quickly, trying to dissolve the mental block that stood between what she wanted to say, and what she would end up actually saying.
Jaeyi had noticed the flush of her cheeks that appeared sometime between finishing her first beer, and pouring a second into her glass.
"You're already drunk? Who would have thought my Seulgi is a lightweight." She teased.
"I'm not drunk. I must just be like…sensitive to alcohol." Seulgi brushed her off. She really wasn't drunk, just…warm. It had been a while since she had last drank. It was at her old school. Almost as if in a past life.
"You sure you can perform well like that?" Jaeyi picked up her math workbook and fanned Seulgi's face with it as if to cool her down.
Seulgi took the workbook from her and pulled her arm back down. "I told you, I'm fine." Her face continued to betray her however, because she could feel a stupid smile spread across her face, and couldn't wipe it off. She couldn't help it, not when Jaeyi sat in front of her, preening at the thought of playing the ridiculous game she herself had devised.
"So, what are the rules again?" Seulgi asked as Jaeyi flipped through her workbook. She looked up momentarily, smirked, and resumed her skimming.
"It's simple. One of us chooses a page, we solve all of the problems on that page, check our answers, and for every incorrect answer we remove a piece of clothing. Fun, right?"
Seulgi swallowed down a lump that had formed in her throat. She had hoped that Jaeyi had been joking when she first pitched the idea to her earlier that day.
She cleared her throat. "Yeah, okay."
Jaeyi placed her open workbook down on the floor where they sat in front of her. "Hmm…start with page forty-eight?"
Seulgi flipped open to that page, and her heart dropped. It was one of the topics she had been struggling with the most, and Jaeyi would know, because she was the one to help her with it.
But even with Jaeyi's help, she still struggled to complete the problems on her own. This was a setup, she thought. But she wasn't about to admit to Jaeyi that she hadn't been practicing as much as she should've been, so she nodded.
Jaeyi set a timer on her phone: fifteen minutes. That was all they had to complete three questions.
"Ready?" Jaeyi waited for Seulgi to nod again, before starting the timer.
The first question had been simple. Basically a freebie to jog her memory. But the two that followed did not have that same mercy on her. She had to withhold a curse as she tried remembering the plethora of relevant formulas, and when to use them.
As the timer approached the fifteen minute mark, the problems only appeared to make less sense, and the sound of Jaeyi's constant scribbling took hold of her attention.
The alarm sounded. Time was up, and Seulgi had only answered half of the second problem, and hadn't even read the third one.
She was more embarrassed by her failure than the fact that she now had to strip in Jaeyi's presence. In fact, remembering that that was the 'punishment' of failing, she felt a sense of relief. It was better than a grade.
Seulgi didn't have to flip to the back of the book to know that Jaeyi's answers were correct, but she did so anyways, and the answers were as perfect as she expected.
She heard Jaeyi tsk across from her. It made Seulgi's ears burn.
"The work you have for problem two is correct, but its still incomplete, so I'll give you half credit for that one."
"What does that mean?"
"Hmm…" Jaeyi slowly scanned her from the bottom up. "I'll count the socks."
Seulgi nodded, it was fair. Lenient even. She did as she was told.
"And for the third problem?" She asked.
Jaeyi smiled sweetly. "You choose."
Seulgi looked down at what remained of her uniform. She silently cursed herself for having taken off her vest as soon as she entered Jaeyi's room. She decided it would only make sense to take off her dress shirt.
Jaeyi watched intently as Seulgi worked at the buttons, eventually leaving her in only a tank-top, her uniform skirt, and of course her undergarments.
"Okay, your turn! Now you pick the page."
Seulgi nodded and began flipping through, looking for something equally sadistic to inflict on Jaeyi. She wasn't confident that she'd even be able to find anything that could stump her in the way she had with Seulgi. But just as she was about to give up and pick something that would instead be easy for them both, she found it. Geometric proofs. She smiled. She hadn't even known that the book covered that topic. What she did know, however, is that they had become Jaeyi's worst nightmare. Long and theoretical, yet still constrained by a set of rules. Best of all: Seulgi was good at them. She would even consider them fun.
Twenty minutes for four questions. Seulgi flew through them, and set her pencil down after only ten.
When the timer went off, Jaeyi was still scribbling.
"Pencils down!" Seulgi sang.
Jaeyi placed the pencil down calmly, her face revealing nothing of what she felt.
Seulgi held her hand out, "Lets see." Jaeyi handed her the book, and she began looking over the questions. Every single one was incorrect. She wasn't even slightly off, she had bombed it entirely.
"I would've liked to extend my gratitude for the half credit you so kindly bestowed upon me during the first round," Seulgi said with a theatrical formality. "However…" she handed the book back to Jaeyi, "you failed. Miserably."
Jaeyi took the jabs in stride, seemingly amused by Seulgi's melodrama. "I apologize, your majesty." She began loosening her tie, "How shall I ever repay you?"
"Take off your shirt." Seulgi ordered, the heat immediately blooming under her skin because she hadn't meant for it to sound so…sexual.
Jaeyi had no obvious reaction to it, however. She simply obliged, unbuttoning her shirt slowly, until she was left only in her bra and skirt. Her gaze was fixed on Seulgi all throughout. She raised her eyebrow, silently awaiting her next order.
Seulgi then felt like she, yet again, was the one in the hot seat, despite Jaeyi being (technically) at her mercy. Her gaze flickered down momentarily, and she could've sworn she saw Jaeyi's lip quirk upward. There was only so much left, its not like Seulgi had many other options other than-
"Skirt."
She'd had her suspicions about the purpose of this game since Jaeyi first explained it to her. Those suspicions where confirmed when Jaeyi removed the skirt and had nothing beneath it but her underwear—which were white and lacey, and if Seulgi's opinion counted for anything, a bit extravagant for the schoolday they had just returned from. Seulgi instinctively averted her gaze when Jaeyi looked back at her, keenly aware of her own expressions and body language. She hated when Jaeyi caught wind of her self-consciousness, only because it motivated her to push Seulgi further. The actual physical heat in her cheeks told her that fighting it was already futile.
"That was only two, you know." Jaeyi reminded her.
"Three. I'm counting the tie."
Jaeyi shrugged, "Suit yourself." She turned around and pulled her hair over one shoulder, exposing her back. "Can you help me?"
It took a second for Seulgi to realize that she was referring to her bra. She inched closer to Jaeyi, and with lightly trembling fingers, unclasped it. Her fingers brushed lightly against her shoulders as she helped slide the straps off, and she felt Jaeyi tense momentarily. The last part had been needless, they both knew she could've easily done that herself, but it seemed as though they were now well past the point of 'necessity'.
They played another round of the game, which had become increasingly more difficult with Jaeyi's bare chest in Seulgi's peripheral vision, having to reread each of the five problems multiple times before finally registering what it was asking. In the end she had left two problems blank.
They exchanged books. Jaeyi finished with a perfect score, again. Meanwhile Seulgi-
"One out of five." Jaeyi announced.
"No way. You're lying." She reached forward and snatched the book from her, "give me that."
But sure enough, Jaeyi was right. She looked down at what she was currently wearing.
Fuck.
She looked at her with pleading eyes, "Jaeyi I don't think-"
"That's okay." Jaeyi smiled sincerely. "How about we make a deal?" She offered.
Seulgi hadn't really thought she'd be let off the hook so easily, had she? She sucked in a breath through her nose and nodded hesitantly.
"We can stop the game, and we both suffer the shame of losing. Or…" she leaned in, "I can deduct two of your wrong answers…in exchange for a kiss."
Seulgi froze. Had she just heard her correctly? A kiss? Her skin prickled at the idea, and her abdomen suffered a very sudden butterfly infestation. She finally accepted that this entire operation was just Jaeyi's long-winded and mildly fucked up attempt to seduce her. Clearly, it worked.
She didn't trust herself to speak clearly, or to not deliver her answer in a sheepish splutter of words. Instead, she opted to answer by standing up and removing her skirt. She kicked it behind her and quickly plopped back down onto the floor.
Jaeyi's face lit up, surprised (and perhaps a little bit relieved) by Seulgi's sudden earnestness. She held back a full smile by biting her lip, and appeared in front of Seulgi, carefully slipping the tips of her index fingers under her tank-top.
"May I?"
Seulgi nodded, and in a moment the fabric was pulled over her head and clumsily tossed somewhere.
They faced each other on their knees. Jaeyi lifted up off of her heels, and cupped Seulgi's face.
She cracked a smile. "Ready?"
"Yeah." Seulgi murmured.
She kissed her slowly, as if to ease the tension Seulgi had built up over the last hour. It worked, in a way. Her muscles relaxed as her attention shifted solely to the feeling of Jaeyi's soft lips sliding against her own.
Jaeyi guided her, angling her head to the side to deepen the kiss. Her hands traveled from the sides of Seulgi's face, down her arms, and settled inoffensively on her waist.
They moved in sync, drawing each other in closer, until they were almost chest to chest.
When she began to feel the sense that Jaeyi would soon pull away, Seulgi wove her hands into her hair and pulled her further into her. Jaeyi grunted in response and squeezed Seulgi's hips. The kiss began moving faster, and with more desperation than before.
Seulgi's first moan was drawn out by the feeling of Jaeyi's tongue brushing into her mouth. It was an accident, a sound pulled out of her against her will. But she forgot to care when Jaeyi responded by pushing her tongue in further. Her hands trailed back up Seulgi's sides, flattening her palms against the middle of her back in order to lay her down.
Seulgi let herself be guided by Jaeyi to the floor without breaking apart. At some point on the way down Jaeyi had unclasped Seulgi's bra, and she let it slide off onto the floor.
With Jaeyi's elbow next to Seulgi's head, and her other hand trailing down her chest, she began placing hot kisses down the center of her throat. She began to suck and leave marks in places Seulgi knew would be visible at school the next day. When her skin pinched lightly between Jaeyi's teeth, she sucked in a quick breath and arched her back.
Noticing her reaction, Jaeyi trailed further up, and bit down just below Seulgi's ear. Not hard enough to leave a mark, but enough to blur her vision and send a wave of heat between her legs. This time, when Seulgi arched into her, Jaeyi pushed back into her, pinning her to the floor.
"Jaeyi-" Seulgi choked out.
"Hm?" she hummed lazily.
She couldn't get the words out, mainly because her train of thought fled the moment Jaeyi's hand traveled lower to begin kneading her breast, lightly at first, and then more firmly as Seulgi squirmed underneath her.
Jaeyi kissed her again, and Seulgi reciprocated with feverish desperation. Jaeyi pinched her nipple, and smiled against her mouth when she whimpered in response.
"Jaeyi, please," she begged quietly.
Jaeyi pressed her hips into her in order to keep her still, and the pressure teased Seulgi with a sensation she desperately wanted to chase. Jaeyi kept her face close as she traced the curve of Seulgi's jaw with her finger. "Tell me."
She could see when she met Jaeyi's gaze, that she wanted this as badly as Seulgi did. Possibly more. She let her chest rise and fall, over and over, failing to catch her breath.
Seulgi could feel her face redden. Not in shame or embarrassment. Was it fear? Anticipation? Arousal?
She wove her hands back into Jaeyi's hair, and she spoke into her lips, her words just above a whisper, "Can you…touch me?" She swallowed, feeling shy, "…please."
Jaeyi's face softened, and she hesitated—maybe pausing to take her in—before kissing her deeply, as if she meant something by it. Somewhere deep within Seulgi, beneath all of the adrenaline and the lust, she hoped she did.
They moved to Jaeyi's bed clumsily, only separating for a single breath as Seulgi laid by her pillow. Jaeyi was not far behind, quickly placing kisses on her stomach, chest, neck, and eventually back to her lips.
Still in her underwear, Jaeyi began by touching her through the thin fabric, using two fingers to draw circles around her clit. She tried not to react so quickly, but her attempt at restraint was obvious by the way she closed her eyes and grabbed Jaeyi's shoulders, lightly digging her nails into her skin.
She felt Jaeyi's breath against her cheek before she murmured against her skin, "My Seulgi is sensitive, hm?"
Jaeyi dragged her tongue slowly against her earlobe as she applied more pressure with her other hand. She could feel Jaeyi smile against her skin as her hips jerked.
"And wet, too." She dragged her finger in a line, feeling where she had already soaked through. "Is this what studying does to you? Is this why my rank is being threatened?"
The teasing was, of course, only adding to the heat Seulgi felt. She hadn't even been listening to what she was saying, at least, not really. The cocky tone of her voice alone was enough to remind Seulgi of who had the control, and had had it the entire time.
She felt the pressure release as Jaeyi took her hand away, only for it to return at the hem of her underwear, pushing slowly beneath the fabric.
"Did you really think that I would let that happen," her fingers found her clit again, but only for a brief moment, as Jaeyi aimed to position her fingers elsewhere. Without a drop of urgency, she slipped one finger into her, then "…without consequences?"
Seulgi sucked on her own bottom lip to hold back what would've undoubtedly been a pathetic sound. She met Jaeyi's gaze.
Despite the vague threat, and despite the taunting, Jaeyi was staring at Seulgi like she were drinking in every drop of her. As if the sounds and sights of Seulgi's pleasure was something she'd waited forever for.
She pulled Jaeyi down by the back of her neck into another starved kiss, and Jaeyi took advantage of the opportunity to slide in a second finger.
Not having braced herself for the sudden pressure, Seulgi failed to keep from moaning into Jaeyi's mouth. She'd tried, instinctively, to shut her legs, but that only resulted in her squeezing them into Jaeyi's body positioned between them. In response, Jaeyi pushed Seulgi's legs back open with her own legs, and used her left hand to push Seulgi's right leg closer to her chest.
In this new position, in having her legs pushed open and pinned by Jaeyi's weight, each stroke and curl of Jaeyi's fingers filled Seulgi with a pleasure that seemed twice as intense as before.
Seulgi's breath hitched as her body began to draw the outline of her climax, her body stiffening while short whines escaped her, before she could even register that they had even come from her.
It must've been clear to Jaeyi that she was reaching the edge too, because right as she felt she was ready to let go, as her eyes began to squeeze shut, and her fingers could not dig any deeper into Jaeyi's skin-
-she stopped.
She'd left her fingers in her. But she had otherwise just…stopped.
She gasped at the sudden drop. She felt like she'd flatlined. Her mind swam. She closed her eyes as she tried to catch her breath.
"Sorry baby," Jaeyi's voice was sudden and sweet, an unfortunate joy to her ears, "but I'm not quite done with you yet."
Before Seulgi could even begin to wonder what she meant by that, she felt Jaeyi lift her weight off of her and travel lower, hooking her fingers under the hem of Seulgi's underwear and sliding them down her legs. Seulgi shuddered at the sudden cold air against her wet center.
Jaeyi didn't tease her this time, only offering a soft curse under her breath, she began pressing her lips to her stomach, "Fuck, Seulgi…" she muttered against her skin, then continued placing wet kisses down her body.
The confirmation of Jaeyi's own arousal left Seulgi throbbing and opening her legs again in a silent plea. Jaeyi moved back down, trailing kisses up her leg. Seulgi's heart leapt at the realization of what was next.
She took her time, letting each kiss linger just a moment too long. Seulgi felt herself growing impatient. She pawed at whatever she could reach of Jaeyi, which happened to be the top of her shoulder.
"Seulgi." She warned.
In the bat of an eye, Jaeyi caught Seulgi's wrist, and pinned it to the mattress. Her lips finally grazed her inner thigh, so close to where Seulgi needed her most. She sucked where her mouth had been hovering, leaving a mark that Seulgi knew would only darken with time.
Upon finally feeling the first lap of Jaeyi's tongue, Seulgi's free arm shot out to grab a fistful of her hair. This drew a stifled moan out of Jaeyi, the vibrations of which sent another dizzying wave of pleasure through Seulgi.
Jaeyi kept a slow, mesmerizing pace, hitting every nerve as she dragged her tongue up Seulgi's folds. She kept her in place with her arms underneath Seulgi's legs, holding them open with her hands around her thighs.
She met Jaeyi's eyes when she looked down, and she had the feeling that Jaeyi hadn't taken her eyes off her since she started. It was determination like she'd never seen it, especially not in Jaeyi, who fought for everything she wanted as if her life depended on it.
When Seulgi's grip on her hair faltered, Jaeyi dug her nails into her thighs, and pulled her in closer. A high-pitched whine escaped Seulgi's throat, and as if that hadn't been enough, Jaeyi began to suck the swollen bud.
At that, Seulgi groaned, arched her back, and started rolling her hips against Jaeyi's mouth.
Jaeyi let Seulgi move against her, taking it as faithfully as she was taking the hair pulling, which she had since gripped tight enough that there wasn't a chance it didn't hurt.
The familiar sensation of a building climax returned, intensified by the sight of Jaeyi between her legs, pieces of hair framing her face messily, her gaze angled up to meet Seulgi's, dark with intention and want.
Seulgi whimpered, revealing her state with erratic breaths and—with the hand Jaeyi still had pinned—gripping the sheets by her head.
Just as she had begun to tip over the edge, she felt two fingers enter her. Jaeyi pushed her fingers in and out, curling them just as she had before, hitting all the same spots as she had before.
Seulgi's thighs tightened around Jaeyi's head, to which she then let go of Seulgi's wrist to grab her knees and push her legs back open. Her fingers only prolonged the buildup, drawing it out until it was almost unbearable. Seulgi's moans died on her tongue, and instead came out as short and labored exhales.
Jaeyi held her down as she orgasmed, managing to keep her mouth in place despite Seulgi's attempts to pull away when the pleasure began to feel more like pain.
Eventually, once Seulgi had finished completely and lay with limp limbs beneath her, Jaeyi pulled away and sat up.
With her forearm laying against her forehead, and her chest rising and falling heavily, Seulgi watched Jaeyi wipe her mouth proudly. Jaeyi waited for Seulgi's breath to even out, and only then did she pull her fingers out.
She didn't look at her fingers before taking them both into her own mouth. Instead, her eyes remained down, fixated on Seulgi's reaction as she sucked them both clean.
Seulgi shuddered beneath her, feeling a relieved kind of exhaustion, like she'd finally let go of the stress of school that she had pent up over the last weeks. And at the hands of Yoo Jaeyi, no less.
Yoo Jaeyi, who (arguably) was the source of that stress. Who was staring at her now with softened features and wide eyes, as if gauging how Seulgi would react to the situation now that the veil of lust had lifted.
Seulgi smiled lazily and pat the mattress next to her. Which was all Jaeyi needed to break out into a smile of her own and crawl over to the exact spot Seulgi had beckoned her to. She propped herself up on one elbow to face her and brushed a piece of hair from Seulgi's face.
Jaeyi's hand lingered by her chin, and when Seulgi let her head loll to the side to face her, she leaned in to place a tender kiss on her lips.
…Seulgi had not expected that part. In fact, there was a lot she hadn't expected, besides the obvious, which was the initiation of this kind of intimacy to begin with.
What surprised her most, now that she thought about it, was the looks. Emotion-filled and heavy with something other than want. It was the fact that she hadn't asked for anything in return, nor did she seem like she even wanted it…and now, it was the attention—her refusal to dismiss it as something she'd done just for the sake of momentary control.
When Jaeyi pulled away, she didn't pull back far.
"Are you okay?" She asked in a whisper.
Seulgi nodded with a bit too much energy, as if a less enthused answer would've led Jaeyi to draw the night to a close before Seulgi was ready.
Jaeyi chuckled and touched the tip of her nose to hers affectionately. "You're so cute Seulgi-ah. I just wanna eat you up." Her lips formed an annoying smile as Seulgi turned red. She tickled the side of Seulgi's stomach, causing her to giggle and squirm and bat away Jaeyi's hands until she finally relented.
Seulgi pushed Jaeyi's shoulder weakly, "You're so…"
Jaeyi raised an eyebrow, "I'm so…what? Go ahead, finish that sentence. I'm sure that you can find plenty of new words to describe me now."
"…annoying."
"Ah okay, I see how it is." She began to push herself up off the bed as if to leave, but Seulgi quickly wrapped her hand around Jaeyi's wrist. She nodded knowingly, "Mhm…that's what I thought," she purred as she laid back down. She pulled Seulgi close against her chest, and began drawing invisible circles on her arm.
It turned into a quiet game of Jaeyi drawing some innocuous symbol along Seulgi's skin, and Seulgi, between yawns, trying to figure out what it is that she had drawn. The first round would be easy, Jaeyi had said.
She drew a heart.
After that, a wave. Next, the sun. Then, the moon. And so on.
Seulgi didn't remember at what point she had fallen asleep, but she did know that she had done so with the last thought—a silent wish—that this game wouldn't be their last.