Chapter Text
Kazuha’s members (mostly Yunjin) always call her an “oblivious puppy”, but she’s never paid much attention to the nickname. Which might just be proving their point.
But this just might be the most ignorant she’s ever been.
It’s not like she’s unaware of periods and how they work, but, well, not having one just means she never really thinks about them. Plus, she’s heard rumours and her members talking about how being an idol affects them, so she just assumed none of the other girls got them.
So colour her more than surprised when Chaewon's a no-show at breakfast and their manager somewhat sheepishly exclaims that she’ll be missing today’s schedule because of bad cramps.
“Cramps? Like, in her leg?” she blurts out without thinking.
Eunchae giggles at her and Yunjin rolls her eyes.
“No, you dummy. Period cramps.”
“Ah…” The realisation dawns, and she blushes a little. “Is she…uh, going to be okay on her own?”
“She’ll be fine. We can check in with her later or when we get home,” Sakura says, and the topic isn’t brought up again.
Everyone else seems nonchalant, but Kazuha spends the whole day with her mind elsewhere. She can’t help but worry about Chaewon. She doesn’t like to think of any of her members alone and in pain, but especially not the girl she’s been harbouring a not-so-tiny crush on for ages…Kazuha’s heart breaks a little as she imagines how miserable Chaewon must feel, and she resolves to do something about it. As soon as they get home, she’ll check in on her and cheer her up.
She realises in the car on the way back to the dorm that she doesn’t have a plan at all. She racks her brain then remembers her mom always craving chocolate whenever it was her “time of the month”.
When she gets home and the others have all gone to their separate rooms she roots around the kitchen cupboards until she finds a bar of chocolate. Then she hovers anxiously in the hallway as she debates whether or not Chaewon even wants to see anyone when she’s like this. Maybe she’s asleep, or maybe she wants to avoid only Kazuha specifically for some reason?
“That doesn’t even make any sense…” she mutters to herself. She finally resolves to stop overthinking things and swiftly knocks on the door before she can change her mind.
“It’s open!” She hears Chaewon call out, and she enters her room to find her curled up in bed, the lights on low and her laptop paused on a movie. She seems happy and alert though, and Kazuha relaxes.
“Are you checking in on me?” Chaewon asks, laughing good-naturedly. Kazuha rubs the back of her head awkwardly then remembers what she brought with her.
“I thought you might want some chocolate,” she says shyly, and Chaewon's eyes light up. She makes grabbing motions with her hands and Kazuha perches on top of the bed covers. She watches Chaewon break off a big piece.
“Thank you so much, seriously.”
“Don't mention it. I’ve been kinda worried about you all day,” Kazuha replies.
“Ah, I’m okay, really! It was worse this morning but I don’t usually get a lot of pain. I’ll be fine tomorrow.”
Kazuha nods and then realises that if Chaewon really isn’t in any pain she might be overstaying her welcome.
“I’m glad you’re okay. I’ll let you get back to what you were watching…” she says, getting up to leave, but Chaewon reaches over to grab her hands.
“Hang out with me, pretty please? I’ve been super lonely all day,” she says, blinking her long lashes at Kazuha, and she never even had a chance of resisting.
At her nod, Chaewon breaks into a big grin.
“Wow, you have super warm hands too,” she says curiously, and Kazuha blushes.
“Thanks, I guess.”
“No, really, it’s a compliment! You’re way warmer than my hot water bottle. I’ve had this one since this afternoon and it’s gotten cold,” Chaewon says, gesturing to her stomach area over the covers.
Kazuha then gets a very bold, very stupid idea. And because all she seems to have done today is open her big mouth, she blurts it out before she’s even finished thinking it through.
“Maybe I can replace your hot water bottle?” she says, and Chaewon's eyes widen.
“What do you mean?” she asks softly, and it’s a good thing she’s still holding Kazuha’s hands because it’s the only thing keeping her from running out the room.
“Maybe…Maybe we can cuddle and watch the rest of the movie?” Kazuha mumbles, and she makes eye contact just long enough to catch a satisfied gleam in Chaewon's eyes before it’s gone.
“That sounds perfect.”
Her cheeks are bright red as Chaewon tosses open the duvet and lets Kazuha crawl in beside her. The offending hot water bottle is promptly tossed aside onto the floor.
Kazuha has no idea where to put her arms and rests them awkwardly by her sides until Chaewon giggles.
“Wanna be big spoon?” she suggests, and rolls onto her side, pressing play on the movie before she gets an answer.
Chaewon's wearing pyjama trousers and a loose tank top. Kazuha stares at her back and decides to keep a sliver of space between them before Chaewon casually leans back against her chest and nestles into her embrace.
After a short internal debate she places her hands on top of the fabric of Chaewon's shirt, and she smiles as the other girl hums contentedly.
Then, there’s peace.
Except Kazuha has no idea what’s going on in the movie because all she can focus on is the smell of cherry shampoo and chocolate. It’s actually killing her, resisting the urge to bury her face in Chaewon's neck and breathe like she’s been deprived of oxygen for hours.
She smells so good. She looks so good, so cute in her pyjamas, all cosy in bed. Kazuha is insane. Why did she think this was a good idea? It was a terrible idea.
Chaewon shifts a little into Kazuha’s hips and she bites her lip.
This is the best worst idea she’s ever had.
She’s still so afraid of making Chaewon uncomfortable - it’s the last thing she wants to do, and she can feel herself hardening slightly. She wills herself to stay strong but Chaewon wriggles again and she nearly moans.
“Chaewon…” she starts to say, trying to think of how to delicately slip away, but she’s interrupted.
“Ah, wait, wait, this is one of my favourite bits,” she says, and Kazuha decides to focus on the movie. Maybe it will help distract her.
The couple on the screen are kissing slowly in a bedroom, the lighting is deep red and a slow, sensual R&B song plays in the background.
Kazuha's jaw drops.
“What kind of movie is this?” she exclaims. Chaewon laughs, rocking her body even more against Kazuha’s body. She’s too shocked to notice she’s harder than she was before.
“It’s just a romance movie,” she says innocently, and she subtly intertwines her fingers with Kazuha’s own, resting them on top of her lower stomach.
“A romance movie,” Kazuha repeats in disbelief as the movie characters start to strip each other’s clothes off slowly and adoringly. Sure, it’s pretty romantic. That's certainly one way of putting it.
“I can’t help it, okay?” Chaewon confesses, laughter still floating around her words. “It happens when you’re on your period.”
“What happens?” Kazuha asks. She’s almost afraid to know the answer, but it’s anticipation, not fear, that’s sitting low and heavy inside of her.
“Oh, y’know. I get super horny,” Chaewon replies casually, and she slips both their hands under the fabric of her shirt to lay against her bare skin. Kazuha jolts at the feeling of actually touching her and accidentally pushes her erection right up against Chaewon's ass. Both their voices hitch with small moans at the same time, somehow unavoidably audible despite the movie playing.
Kazuha pauses, trying to calm the thoughts rushing around her head. This doesn’t feel real, but if it is…
She doesn’t want to miss an opportunity like this, and she’s willing to take the chance. She may be oblivious, but hopefully she’s got this one right.
Slowly, deliberately, she grinds back up into Chaewon.
“Kazuha…” Chaewon sighs shakily, and she pauses the movie. She deftly turns around in Kazuha’s arms so they’re facing each other and Kazuha’s hands come down to rest on Chaewon's hips.
Dark eyes stare up at her, blown wide with desire, and she’s smiling too, like the cat that’s got the cream.
“I know this might be a bit weird, so you don’t have to do anything you don’t want to do,” Chaewon says shyly. Kazuha can only buck her hips up and hope that lets Chaewon know there are so many things she wants to do right now.
Chaewon giggles and it seems she gets the message. She traces Kazuha’s side and then boldy asks “So, do you wanna finger me?”
That’s how Kazuha ends up on her hands and knees on top of Chaewon, staring down as the other girl takes her tank top off to reveal her chest. Her nipples are rosy red and hard and Kazuha is drawn to them like a magnet. She bends down, takes the left bud in her mouth, and sucks. Chaewon gasps.
“Oh my God, yes. Be careful, though, they’re sensitive,” she manages to say breathily. Kazuha soothes her tongue over it with small, gentle licks and then goes to move to the other one before realising Chaewon has beaten her to it. She’s twisting and pinching it between her own small fingers and Kazuha could watch her do so for hours.
“I’m obsessed with you,” she blurts out, and Chaewon hums.
“Will you show me?” she asks innocently, and Kazuha can feel her eyes on her approvingly as she nods enthusiastically and starts to kiss down Chaewon's torso.
She’s addicted to her smell, she doesn’t care if that makes her weird. She presses her face into her tummy and breathes in - it’s just the warm, rubbery scent of the hot water bottle, but it’s Chaewon, so it’s amazing.
The reality of what she’s about to do hits her as she gently pulls off Chaewon's pyjama trousers and the faint but unmistakable scent of blood hits her. She doesn’t feel disgusted at all, and it must show on her face because Chaewon relaxes a little bit into her gentle touch as Kazuha strokes her fingertips against the outline of Chaewon over the fabric.
“Have you ever done this before?” Chaewon asks as Kazuha knees between her legs.
“Not when someone’s been…like this,” Kazuha replies, a little shy. “Are you going to be okay taking my fingers? I don’t want to hurt you.”
Chaewon hums. “One sec,” she says, and reaches to open the drawer of her bedside table to pull out a sleek black wand vibrator. “I usually use this to get myself ready,” she continues, blushing, and Kazuha’s anticipation grows even more.
Chaewon passes her the vibrator and Kazuha turns it on the lowest setting, feeling it thrum gently in her hand.
“Just over the fabric?” Kazuha says, hovering it just over her panties, not quite touching.
Chaewon shifts a little and bites her lip. “Mmhmm. J-just like that,” she says with a gasp as Kazuha inches it close enough to make contact.
Chaewon sighs contently as Kazuha runs the round black head of the toy gently up and down the fabric, making sure not to press too hard just yet. Watching Chaewon play with her own tits is intoxicating. Kazuha is rock hard in her sweats already, and it’s tempting to use her free hand to palm herself, but she wants to focus on pleasing Chaewon first. So she turns the vibrator’s speed up and watches, enthralled, as Chaewon squeaks in surprise when it brushes against her most sensitive spots.
“That feels so good,” she moans sweetly, and it's like music to Kazuha’s ears.
“More?” she asks, reaching out to stroke gentle patterns on her thigh.
“Yeah, please, want more,” Chaewon says, and Kazuha increases the speed once more. She’s definitely becoming obsessed with the way Chaewon twists and moans when she’s played with like this. She watches as she bites down on her finger, her face flushed pink and her eyes dark with arousal.
“You weren’t kidding, were you? You really get desperate like this,” Kazuha comments, pressing the toy harder against Chaewon's core.
“Can’t help it,” she pants. “So s-sensitive - ah!”
Kazuha has to firmly hold her thigh in place now to stop her from closing her legs shut.
“Just a little longer,” she mutters. “Wanna make sure you’re ready for me.”
“I am, I am, I’m ready for you, please please please,” Chaewon babbles, and after the final beg from her Kazuha relents. Partly because she doesn’t want to overstimulate her too much, and partly because she’s embarrassed she might cum in her boxers sooner than she wants to.
She puts the toy to one side and gently, almost reverently, pulls down Chaewon's underwear and sets those aside too. She spreads her legs with both hands, drinking her in with her eyes. She’s neatly trimmed and slick with both arousal and blood. The smell from before is stronger now, sweet and tangy. Kazuha looks up to see Chaewon has buried her face in her hands, her breathing shallow.
“We can stop if you need to,” Kazuha says, half selfless worry and half teasing.
“If I don’t have your fingers inside me soon I’ll cry, I really mean it,” Chaewon insists, and Kazuha can’t refuse her anything.
She pushes two fingers gently against Chaewon's entrance, waiting to see if there’s any resistance, but she’s met with hot wetness instead. She opens up to her so easily, so wantonly, that she can’t help but utter a low groan to match Chaewon's high pitched whine.
“Holy shit, you’re so tight,” she mumbles, and Chaewon keens in response. Kazuha slowly pulls out to stare at her red covered fingers in amazement before thrusting back in again, slow and deep. She brushes her thumb gently against her clit in circles, revelling in the way it makes Chaewon swear under her breath.
“More, Kazuha, please,” she begs, and Kazuha obediently adds a third finger and angles her thrusts up. She keeps the pace almost agonisingly slow and in time with her strokes against her hard clit, and when she feels Chaewon's thighs start to shake, she subtly slips another inside her. It pulls a loud, long moan of pleasure from her.
Chaewon's stuffed with all four of her fingers now and she’s stretched so deliciously around her.
Kazuha moans under her breath, so turned on it almost hurts, but she keeps thrusting her fingers up, wanting so badly to make Chaewon cum.
“So…full… shit, I’m so close,” she says, and her hand reaches down to push Kazuha as deep as she possibly can into her, pressing her palm down onto her clit. Kazuha does her best to keep some pressure against it and her breathing is shallow as Chaewon's body shakes and stills. Her grip is intensely strong as she holds Kazuha’s hand in place, letting her feel her clamping down on her fingers over and over again as she cums with a shout of her name.
The moment seems to last forever until Chaewon's grip finally loosens and Kazuha gently eases her fingers out, leaving Chaewon empty and gaping and teasing one final moan from her.
That’s when Kazuha finally loses her control and shoves her pants and boxers down before wrapping her blood-stained hand, sticky also with Chaewon's juices, round her achingly hard cock. She’s been on the edge for what feels like eternity and she knows she won’t last long. A few quick, frenzied strokes and she’s cumming with a shameless moan into her hand. She can feel Chaewon's eyes watching her hungrily as her length is covered in a mix of red and white.
As Kazuha closes her eyes and comes down from her earth-shattering high, she can sense Chaewon moving about. She opens her eyes when Chaewon passes her tissues and she awkwardly cleans herself up as Chaewon redresses herself and flops back into bed with a contented sigh.
“That was amazing,” she says sleepily, “you were amazing.”
“You’re the amazing one,” Kazuha replies quietly as reality starts to sink in. Never in her wildest dreams could she have imagined today ending in mind-blowing period sex with her crush, but it did, and now where do they go from here?
A quick glance at Chaewon reveals that it’s a conversation they probably won’t be having today. The other girl is already under the covers, eyes half-closed in exhaustion. Kazuha decides to let her sleep and she presses a quick kiss to her forehead. She gets up to leave and take a much-needed shower when she hears Chaewon call after her.
“Kazuha?”
She turns her head to see Chaewon looking at her with a smirk.
“I can’t wait for next month.”