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Jungkook is too shy for his own, still timid and nervous at times. Especially when it comes to asking for something, even if it’s something he feels like he needs. It’s rather silly, He and his Jiminie hyung having been in a relationship for the good part of two years now, but Jungkook he still chokes up, afterall what he needs is hardly conventional, or something they could really do while still living at the dorm with their five nosy but well meaning friends and bandmates. They are moving out soon anyway, into a large apartment. Their only cozy space, and privacy sounding like a dream, although it pains them both a little too, finally moving out of the dorm after so many years spent together with the others, it’s bitter sweet.
The locked box shoved deep under the bed in the abandoned room Jungkook never sleeps in—since he curls up against Jimin every night now. That's where his secret lives. Jungkook has done it by himself, more than once now, waiting until the others aren’t around or too busy and allowing himself to relax into it, the contents of the box helping the stress and tension melt away from his body.
A pacifier, a marvel colouring book (with crayons!) and a chimmy plush.
The three unforgivable items that Jungkook hides away. He lavishes any chance he gets to slip into little space, eagerly plopping himself down in his unused bedroom in front of the old television still in there, the pacifier popped between his lips, his treasured colouring book between his legs and the plushie tucked in his lap. It’s hard, being your own caregiver. The articles Jungkook reads online always mention someone else, a proper caretaker, someone to top up sippy cups and cuddle with, a daddy, or a mommy.
He’s not able to fully let himself slip into little space. Purely out of fear of forgetting about the important details, like when his hyungs get home, the idea of being caught is stressful. It was hard enough even buying the pacifier, Jungkook had to got it shipped from an online store, the other stuff was easier, no one really batted an eyelid at Jungkook buying artsy stuff, so he just slipped the colouring book into the bags along with his paint brushes and pots of paints. The plushie was shockingly easy to steal from the set during filming of one of their shows.
It’s about a week before he and Jimin move out when Jungkook gets the dorm to himself again, by a miracle, a few hours of no interruptions and freedom. He repeats his usual routine on days like this, collecting everything he needs and locking himself in his bedroom, hiding away like he’s about to commit a crime. Jungkook has grown more attuned to his little side, as of late, knows certain tv shows shows, smells, and even clothes can make it easier to slip.
Jungkook always dresses comfortably, everything oversized when he's planning to let himself slip. It’s not hugely different from his usual attire, although the iron man socks make all the difference, they are of course, the most important part of his outfit.
He settles onto the floor, legs splayed out, chimmy tucked in one arm as he clumsily opens the crayons and finds one of the uncoloured pages to start to colour it in. he doesn’t colour it tidy or neat like he does in the fancy adult colouring books, he’s messy, colours overlapping and going outside the lines. Helps him get into the headspace and oh Jungkook slips quick, it’s rather freeing, to act childish, to colour silly pictures and watch cartoon movies.
But there’s always one issue, Jungkook wishes Jimin was with him. Someone to proudly show his badly coloured pictures too. Someone to whine at when his cup of milk runs dry, he always feels too babyish and dumb to attempt to get himself a refill. Someone to kiss his nose and pop the black pacifier into his mouth when he feels grumpy about the cartoon finishing.
Jungkook considers blurting it out that night when they’re in bed together, his head on Jimin’s chest, eyes heavy and content. Jungkook though, is as it turns out, a bit of a coward. Opens his mouth to speak more than once, but falls silent every time. “I love you,” he says instead.
“I love you too, baby,” Jimin mouths back, the words making Jungkook shudder and nuzzle closer, nose inhaling Jimin’s scent, the scent of his expensive shower gel, sweet like peaches. They fall asleep like that, and for the next three weeks Jungkook shoves his urge to tell Jimin to the back of his mind.
It doesn’t take long for Jungkook to weaken, he’s braver with the lights turned down. The only light as he lays cozy next to Jimin is the distant street lights down below, the only sound the a/c and the pitter patter of rain on the large windows.
“Jiminie-hyung,” Jungkook says softly, a whisper in the dark, as he inches closer. Entwining their bare legs beneath the soft sheets.
Jimin turns to face him, hums sleepily in acknowledgment. “Hmm?”
Jungkook tenses up then, knowing he’s about to confess his feelings. It’s easier in the dark, averted eyes and the pink tint on his cheeks well hidden in the shadows. “I need to talk to you about something.”
“Oh?” Jimin sounds more awake, and a little panicked if anything. Trying to think up what Jungkook could possibly need to talk to him about that is worthy of being done hidden in the dark. “What do you need to talk about?”
Jungkook feels bad, he can tell his words have spiked Jimin’s anxiety. Made him anxious that it’s something bad and terrible, they’ve just moved in together, Jimin’s probably already jumped to a bad conclusion. “If you think we should move back to the dorm, it’s okay, you know, Jungkookie? I understand this is a lot for you.”
Jimin really did jump to the worst conclusion. “No,no, hyung, don’t be silly! it’s great, i miss everyone, but it’s nice to be… alone with you more.” Jungkook says, embarrassed, but it’s true, while it’s odd not being around the rest of his hyungs all day every day, moving out has certainly helped their intimacy. No longer having to be hushed and quiet, or having to restrain himself when Jimin fucks him silly. Yeah it’s nice.
So… what is it, Jungkookie?” Jimin asks, still concerned. Reaching forward in the darkness to cup Jungkook’s flushed cheeks. Jungkook can’t seen, not properly in the dark, he can make out the vague details of Jimin’s face, and feel his gaze burning hot and heavy, with an intensity that he’s more used to during sex. He and Jimin were no strangers to less vanilla sex, Jungkook liked to give up control and Jimin relished in having all control, they fit rather perfectly.
“It’s, uh, embarrassing.” Jungkook mutters, under his breath. There’s no backing down now, Jimin will push him until he spills all the details anyway.
“Does my baby have a new kink?” Jimin asks, and Jungkook thinks if he could see, Jimin would have quirked a brow and smirked at him. Any tension melted away into nothingness.
“Kinda,” Jungkook whispers, he had read online that it could be sexual for some people, he’s not sure if the sexual side is for him. “It's not always sexual though!” He adds, quickly.
“You gonna tell me what it is, Jungkookie?” Jimin asks, soft. Fingers loosely stroking Jungkook’s cheek. “I won’t judge you.” Jungkook knows he can trust him, but he’s still starting to flounder, heart racing.
“I-I like being an uh little.” Jungkook mumbles, he’s pouting, embarrassed and feeling entirely too exposed, even in the dark. “It’s hard to explain.”
“Well, try me,” Jimin says, inching closer. “Wanna know what you like.”
Jungkook tries not to cringe. “I like colouring, watching cartoons, plushies, stuff like that. stuff that makes me feel younger.” Fuck, he forgot to mention the pacifier, fuck, fuck, that’s the weirdest part of it, at least to Jungkook.
“There’s also uh, a pacifier…” Jungkook really does whisper that, it’s probably the most humiliating part of it. Truly an item for children, and yet he craves one between his lips at the littlest amount of stress. “Sorry, know it’s weird,” Jungkook’s trembling lips betray him, he’s just scared, anxiously waiting for a response.
“It’s not weird,” Jimin says softly, “unexpected, but definitely not weird.” He clears his throat, “where do I come into though, Jungkookie? What can I do for you?”
Jungkook feels like a weight has been lifted just hearing him say it’s not weird. His biggest concern had always been that Jimin would find it creepy, or weird, perhaps to the point where it would somehow ruin everything.
“I’d want you to be my caregiver,” Jungkook whispers, cheeks turning pink in the dark, yet again. “Like, take care of me, maybe baby me a little more than you already do, stuff like that.”
Jimin laughs, “I mean, I should probably do more research first. But I kinda like how it sounds.” He ruffles Jungkook’s hair, can sense the nerves still wracking him and is eager to soothe them. “I have to ask, where do you keep the stuff you’ve been using? is it that weird black box you keep locked in the bottom of the wardrobe?”
“You should do more research, definitely,” Jungkook replies, leaning into the touch. “And you weren’t supposed to notice that…”
As it turns out Jimin’s research is very in-depth, free time spent binge reading most forums on the topic, all the ins and outs. “Would you call me daddy?” He asks causally, about two days after their original talk that was done in the darkness. There’s no darkness to hide behind this time though because Jimin asks the question over the table while Jungkook is half way through his bowl of cereal.
Jungkook almost chokes, not expecting such a question first thing in the morning, “if that’s the term you’re most comfortable with, or I could just use your name, there's not really any rules,” Jungkook replies, pretending not to notice the way the corners of Jimin’s lip quirk upwards.
“Think I quite like daddy,” Jimin murmurs,
gaze lingering on Jungkook purely because he likes the way he flusters. The painfully endearing little look of panic and the cute pout on his lips because he’s still entirely too shy about the entire situation. “We should test it out,” he’s teasing now, testing the waters, “say ‘thank you, daddy.’”
Jungkook sucks in a breath, he really can’t stay shy about this. There so much they need to discuss before they can actually commit to it and test it out together. It’s not like he didn’t want to call Jimin “daddy,” if anything he really wanted too. Is it just being faced with it and doing it for the first time, it makes him nervous.
“T-thank you, daddy,” Jungkook repeats, the words don’t feel as alien on his tongue as he expected. If anything they feel comfortable rolling off his tongue m, and saying it makes him feel small, which is the desired effect. Jungkook fidgets in the seat, and bites at his lip. Jimin’s gaze, along with being talked into already calling him “daddy,” make Jungkook feel like he could easily slip into little space. But they have work today, important recording and comeback related work. He wants to whine, but keeps his mouth shut.
“Is daddy okay for you, not uncomfortable?” Jimin asks, genuinely.
It’s more than okay.
“Yea it’s fine, it’s just,” Jungkook fiddles with his hands in his lap, chewing his lip into his mouth again. His cereal is a little too soggy to finish now, so he just stares at the half empty bowl. “Saying it makes me feel little.”
“Oh,” Jimin replies, looking decently pleased with himself. He reaches forward to brush a stray piece of hair out of Jungkook’s hair; still mused from sleep, and he seems oblivious to the fact that such a simple gesture, such as making sure he’s not blinded by his own hair, can make Jungkook feel cared for. which in turn makes him feel even more little. “I wanna see you like that, you know?”
“I know, “Jungkook says, but it’s whinier than intended, the word getting drawn out on his lips. “But we need to talk about it more, and we have work soon,” he adds. There's too much to get through in one conversation, this can’t be rushed as much as he would like too.
It takes them time to figure things out, the dynamics ebbing and flowing as they adjust to it. They start out small, simple. Jimin lazes away on the couch while Jungkook sits cross legged on the floor just a few feet away. And oh, Jimin’s heart flutters when he sees how adorable Jungkook is in his dark blue dungarees, the fabric cut off at the knees, and ripped and frayed at the edges, a crisp white shirt underneath, and the usual socks, iron man, it’s always the iron man socks.
It’s shockingly easy for Jungkook to slip, he hadn't expected it to come as quickly as it does, he thought the nerves and anxiety about Jimin being there would make it more difficult.
“Be a good boy and colour while daddy watches his drama, okay?” Jimin says, there’s a newly developed authoritative tone to his voice. Not completely unlike when he’s demanding in the bedroom, filthy whispers of “spread your legs,” ”open your mouth,” words that make Jungkook blush. This is different though, and as Jimin reaches down to ruffle his dark hair, Jungkook already feels himself slipping.
It’s not as awkward or as strange as Jungkook imagined, if anything it’s nothing of the sort, anxiety melting away at an alarming speed from the occasional praise Jimin gives him as he works at the page, it’s very important in his mind that he colours this perfectly, after all it’s his first piece of art he wants to show Jimin, it’s important he colours it all neat and tidy. But it’s so difficult when he’s in this headspace, more clumsy, and uncoordinated, the tips of the crayons so easily slip past the lineart even when Jungkook is ever so careful.
Jungkook wiggles in frustration, chewing his lip and frowning as he colours in the page, he wants it perfect, but that's an impossible feat when he feels so little, more clumsy. He settles for doing the best he can, which isn’t very good. But Jimin breaks into a small smile all the same when he holds up the messily coloured page out of his colouring book. It’s hard to care about the TV screen getting blocked by a badly and messily coloured in Iron Man when Jungkook is showcasing his picture with adorable shiny eyes.
“Kookie did a good job?” Jungkook asks shyly, head cocked to one side. He looks more like a puppy than a baby, but adorably sweet all the same. This is the most he’s ever slipped around Jimin, and he’s never referred to himself in third person or babytalked, at least not outside of silly jokes played with his hyungs anyway. But somehow in little space, it feels so right.
Jimin’s eyes give the colouring a look over, poor Jungkook left holding his breath and wanting praise. “Did such a good job baby,” Jimin coos, it’s a sugary sweet response. Has Jungkook blushing to the tips of his ears, eager to please his daddy. “You wanna come up here and cuddle?”
Jungkook nods, clambering into the couch and curling up against Jimin, nuzzling into his neck. Honestly it’s what he’d been fantasizing about for months, having Jimin there to stroke his head, to whisper sweetly into his ear. They stay like that for a while, until Jungkook unconsciously slips his thumb into his mouth, eyes still glued to the screen as he suckles on it.
“Hmm baby, don’t do that, it’s dirty,” Jimin sighs, hand coming up to forcibly remove the digit from Jungkook’s mouth, he pouts, whines and grumbles about it. The first sign that he can, in fact, be a little bit of a brat in little space. “Shush, I’ll get what you need.”
Jungkook whines more when Jimin untangles himself from Jungkook, not wanting to let his daddy leave quite yet. He gives up eventually, watches Jimin leave the room with only a little bit of a lip tremble. He returns with the pacifier in hand, and Jungkook beams. He had stopped locking the secret box he kept it in once he’d told Jimin everything. It’s their thing now, a shared secret.
Jimin sits back down, one hand firmly behind his back. Jungkook shifts closer, making grabby hands at the pacifier, the tattoos on his hands a stark contrast to his behaviour, all cute and soft against the mostly black ink. “Wan’ it, daddy,”
Jimin almost melts on the spot. “I have a surprise for you first baby, wanna see?”
Jungkook nods, makes a little enthusiastic uh-uh noise under his breath, excitement evident on his face, eyes glittering as he watches Jimin remove his hand from behind his back.
The surprise is a little pacifier clip on, blue with white bunnies on the fabric. Jungkook can’t guess when exactly Jimin had brought it for him, but in his current headspace, it’s potentially the best gift he could ever even dream of. Hands fisting at his side in excitement, nose scrunching as the corners of his mouth turn upwards, his little bunny teeth digging into his bottom lip as he breaks into a smile.
“Bunnies,” he mumbles, pointing at the pacifier clip.
He fidgets in excitement as Jimin attaches it to his shirt, and then fastens the pacifier to it. “Thank you daddy,” he giggles while Jimin offers the pacifier to his lips. He takes it eagerly, let’s it pop into his mouth as he softly sucks at it. Jimin runs his thumb against his cheek, still a little flushed pink.
“Wanna cuddle with daddy again?” Jimin offers, booping his nose and watching his shrunch cutely under his touch.
“Please,” Jungkook lisps, the pacifier morphs his speech even further and makes him sound more babyish. They settle back into the couch, Jimin cuddling him, pressing little kisses to his head, and listening to the quiet suckling sounds Jungkook makes as he drifts to sleep.
Jungkook is big again when they both wake up later, he’s also less stressed from work and relived that it went so well. Even if he feels a little embarrassed waking up tangled around Jimin like a koala, with a pacifier in his mouth and drool on his chin and Jimin’s t-shirt.
It’s a relief to Jungkook, that Jimin enjoys being a daddy as much as he enjoys being little. It becomes a regular thing, something they naturally fall into. Jungkook finds daddy slipping out just as a term of endearment, even when he’s not little.
Jimin learns how to make him feel little, knows all the words and actions to tip Jungkook over the edge and right into little space. Everything is great, perfect even, for a few months. They have a few minor incidents, mostly when Jimin treats him a certain way in public, it’s something that Jungkook has to be careful of, afterall you can’t slip up and call your bandmate “daddy,” in front of your other bandmates and a room full of staff. Nor can you slip your thumb into your mouth when things get a little boring, the one time he had, it easily got played off as him biting his nails.
It’s like the more comfortable Jungkook gets the smaller he starts to feel when he’s at home with Jimin. It’s not all the time but it's often enough that Jimin can pick up on all the ques when he feels extra small, gets a little extra whiny, curls up against jimin a little closer.
“Feeling smaller than usual, baby?” Jimin asks, softly stroking a hand through his hair, knows exactly how to soothe and comfort his baby,
“Uh-huh,” Jungkook whines from behind his pacifier, burying his face into the crook of Jimin’s neck, fiddling with the hem of his baby blue sweater, it’s oversized, even his large frame is buried beneath the soft fabric. It only adds to how little he feels, head all fuzzy, too little to even focus on Kung Fu Panda 2 playing on the television. A favourite of his when he doesn’t want to watch marvel movies on repeat.
It’s after Jungkook’s third sippy cup of juice, that he realises he needs the bathroom, rather desperately in fact. Those three juices making themself very well known, an urge too strong to ignore. He could just tell Jimin, but, the last time he told Jimin, Jimin had insisted he was too little to use the bathroom by himself, and would probably make a big mess. So he’d been faced with the humiliation of Jimin taking him, and making a show of tugging his sweatpants down just far enough to pull out his cock and aim for him. Jungkook had been scandalised by the whole thing, aroused but scandalised.
Sure it might have ended with them on the couch, Jungkook humping against Jimin’s thigh until he came because his daddy touching his cock got him all excited. That was the first time they did anything sexual while he was in little space, it had been pre-negotiated rather extensively while Jungkook was big, so everyone was comfortable.
But all Jungkook mostly remembers now is how embarrassing it was having to tell his daddy he needed the bathroom, even if humping his thigh afterwards had felt so good. He decides to wait until he’s big, he can do that! Jungkook rarely feels little all day, it would be a few more hours at the most! Surely he can hold it and save himself the embarrassment. Jimin will probably fuck him later anyway.
Jungkook ignores the building pressure, wiggling up closer to Jimin and sucking a little more intently on his pacifier, something to take his focus off the pressure mounting in his bladder. Thighs squeezing together the best he can muster, determined not to show his desperation to Jimin.
“Baby,” Jimin murmurs, around ten minutes later. His eyes drifting to the discarded sippy cup next to his glass on the coffee table. “Are you still thirsty?”
Oh no.
Jungkook shakes his head, perhaps a little too quickly. “Nuh, al’ready had three, daddy,” he holds up three fingers as if Jimin needs to see the number. “Don’t wanna drink anymore!”
Jimin tuts though, shaking his head. “I don’t want my baby dehydrated, I’m sure you can manage one more for daddy, can’t you, koo?” Jungkook is not one for throwing silly little tantrums, but his lip trembles as he tries to hold it together, Jimin knows. He has to know. The subtle glint in his eye, the way his lip quirks upwards, it’s obvious even to Jungkook.
“One more,” Jungkook begrudgingly mumbles under his breath. He mostly behaves, fighting down the urge to show off properly, settling for frowning and glaring as Jimin pops the pacifier out of his pout and replaces it with the sippy cup. Jungkook was just a little too clumsy, all thumbs when little, it was a logical step. a little red sippy cup, to prevent any spills and messes. Jungkook loves being small, but Jimin likes to push him deeper in little space, making him feel really small and helpless. It’s a power balance thing and right now, Jimin is really pushing, pushing him deeper.
“Gotta make sure you stay hydrated baby,” Jimin coos, voice sugary sweet as he watches Jungkook drain the entire cup. Jimin gives him no choice but to ignore the way his already full bladder aches and throbs. Daddy knows best after all, and misbehaving would mean punishment, and punishment would mean spankings and well Jungkook’s poor bladder is in no fit state for that.
Jimin strokes Jungkook’s flushed cheek under a thumb, “good boy, that’s better now isn’t it?” He says. But It’s not better, it’s so much worse, and Jungkook is practically in pain as Jimin puts the drained sippy cup back on the coffee table. Has to bite his lip hard to suppress the whine that threatens to slip past his lips when Jimin tugs him closer, wraps his arms around his waist and pulls him tight.
Jungkook could just get up and go, insist that he’s big enough to use the bathroom by himself, or weaken and just let Jimin take him. But he’s ever so competitive, even with himself, and he had
planned to wait, so wait he will. Even if he has to squirm his way through the rest of the movie, thighs clamped together until it hurts.
There’s a way out of this, a safe word Jungkook could mumble in Jimin’s ear to escape, but it doesn’t even cross his mind to use it. No, it’s much better to settle for squirming next to Jimin, little huffy breaths escaping when Jimin’s fingers get more insistent beneath his baby blue sweater, pressing against the swell of his bladder.
It’s not that cuddling with Jimin isn’t lovely, really it is. But there’s so much extra pressure on his bladder and it makes everything tingle. Makes Jungkook feel hot, sweat building against his brow and in between his fingers. Time seems to drag slowly, and by the time the credits roll Jungkook is fit to burst, bladder truly reaching its limit.
“D-daddy?” Jungkook whines ever so tentatively, not quite sure where exactly this is heading. He thought Jimin would weaken, take pity on his sweet whines and take him to the bathroom without him so much as having to ask. But he’s forging ignorance.
“Hmm? Do you need another refill? or does my baby need even bigger snuggles?” Jimin murmurs, and Jungkook just nods. Goes clambering into Jimin’s lap, snuggling in tight, face buried in the crook of his neck, his squirming never ending. “Why’s my baby so squirmy, huh?” Jimin sighs, pressing kisses to his head. “Something bothering you?”
Jimin’s fingers press harder than ever against the noticeable swell of Jungkook’s stomach, and—he leaks. It’s barely a dribble but he squeaks, feels the front of his briefs dampen with piss, hot like his shame.
“Daddy, don’t...” Jungkook whines, panicking at the growing urgency. the fact he’s one little push away from pissing, pissing all over Jimin, and their expensive couch. Any moment, surely, Jimin will take his hand and lead him to the safety of their bathroom? Save Jungkook the embarrassment and shame. “Gonna—Gonna....”
“What is it baby? Use your big boy words for daddy, yeah?” Jimin says, ever so teasingly. Bringing the palm of his hand to press harder against Jungkook’s stomach. He leaks again, for longer this time, cock twitching as piss steadily dribbles out. He has to clench every muscle in his body to try and stop the flow, and he’s barely successful.
Jungkook realises with a little bit of horror that he’s not getting out of this situation unscathed. He’s far too desperate to get up and run to the bathroom and he’s sure standing up would result in him soaking the wooden floor and rug. But currently he’s straddling Jimin’s lap, and pissing himself there seems like a pretty terrible idea too.
He’s just a dumb baby, one that’s too silly and shy to tell his daddy that he needs to pee, and now he’s gonna piss himself, one way or another. Jimin’s fingers are rubbing his distended bladder and not helping matters. “Daddy, i-i can’t.”
“You can’t what, baby?” Jimin asks, sweetly. Jungkook is docile on his lap, let’s himself get pulled out of the hiding place he had made in Jimin’s neck. Looking at Jimin makes it so much worse, Jungkook is pouty, cheeks all flushed, tears building in his pretty eyes. He’s still squirming too, until Jimin presses down again, and he just can’t.
Jimin must see the panic in Jungkook’s eyes as he stills, probably hears the hiss too. And oh, Jungkook tries, he really tries, muscles tightening endlessly but it’s not enough as the floodgates open. Jungkook’s face crumples in defeat, his cheeks all flushed and warm with embarrassment; tears threatening to spill. Jimin’s gaze drifts down to their laps, the baby blue fabric of Jungkook’s sweatpants quickly darkening as he helplessly wets himself. The wet warmth spreads from his own crotch to Jimin’s, soaking his jeans as well.
It seems to go on forever, mostly silent besides the distant hum of music from the tv, the hiss of his ongoing accident and the little sniffles he makes, on the verge of tears. He’s embarrassed, humiliated, and worse of all, it felt good. It’s quite pitiful,
the tiny little “sorry, daddy,” Jungkook manages to muster between sniffles. He’s curious as to if this will result in a punishment or if his daddy will take pity on him and his obviously weak bladder.
It’s a relief when Jimin doesn’t seem mad, his hand instead stroking Jungkook’s back in comforting circles, a far cry from the spankings he loves to hate. “Why didn’t you tell daddy, huh?” Jimin murmurs, “could have saved us cleaning up this big mess.” Not that Jimin seems to mind said mess, if him being hard beneath Jungkook’s ass is anything to go by.
“Was shy ‘bout asking.” Jungkook sniffles back, resisting the urge to grind down. The wetness isn’t as gross or uncomfortable as he expected, the warmth almost pleasant until it starts to cool and make his sweatpants stick to his skin. “W-won’t happen again, promise.”
His shiny eyes are pleading, and Jimin is surprisingly good at hiding his smirk at the whole situation. “Hmm, I think we should talk about how to deal with this when you’re feeling big again.” Jimin sighs, “but for now i need to clean my little bun up.”
Jungkook hums, starts to pout when Jimin shifts him off his lap. Even while standing Jungkook clings to Jimin, as if he might get lost if he were to loosen his grip on the hem of his t-shirt. Jungkook can really see the damage now, the couch cushion where they were sitting is sodden, his sweatpants are soaked, and he can feel it still dripping from his skin, leaving little drips on the wooden floor. Jimin’s pale blue jeans are a dark blue; almost as soaked as Jungkook’s much to his horror.
“I’m never giving you that many refills again,” Jimin says, as if he didn’t hydrate Jungkook all afternoon for this exact purpose. Jungkook only makes a noise of agreement, he still feels like whining about the entire thing; eyes still more interested in staring down at the floor than looking elsewhere. Jimin ruffles his hair, tippy toes to kiss his cheek. “Go wait in the bathroom while I clean up this little mess.”
The mess is by no means small, and Jungkook wants to help but begrudgingly makes his way to the bathroom to wait instead. It’s probably quicker for Jimin to clean up without Jungkook’s help anyway, he’s still in little space; he’d probably get in the way more than help tidy any mess.
Jungkook feels big again later, after they’ve cleaned up and taken a well-earned nap. He’s embarrassed too, giving some serious side eye to the wet cushion on the couch for the way it’s reminding him that just a few hours before he’d pissed himself, and liked it. Jimin doesn’t mention it, acts like it’s every other day, like nothing out of the ordinary happened.
They fuck later that night, cuddles quickly turning less innocent. Jungkook is happy, content even to get fucked into the mattress, all soft and slow. It’s loving sex, different to the roughness that they usally enjoy, perhaps Jimin thinks he needs this tonight. All the lovely whispers of “good boy, so perfect.”
There’s an edge of filth to it, as there always is with them. Jimin waits until Jungkook is close, a trembling whiny mess beneath him. That’s when Jimin leans closer, nips at an earlobe, his hot breath ghosting Jungkook’s ear.
“Daddy's little piss baby, hmm?”
That’s all it takes for Jungkook to break apart, cumming all over the sheets with a moan of “daddy.” tightening around Jimin’s cock, driving him over the edge too. Leaves them both panting, fingers laced together as Jimin rolls off him and into his side of the bed. They almost fall asleep like that, boneless and almost too lazy to bother getting under the sheets, Until Jungkook insists they do, curling around Jimin until he’s pressed right up to him. Jungkook being the big spoon, nuzzling into Jimin’s neck like he’s a puppy, soft and sweet.
They officially talk about it a few weeks later, it’s a proper fancy thing, they take kink negotiations very seriously. Even if it’s done over hot chocolate and snuggles on the couch.
Jungkook almost chokes on his own spit when he hears Jimin’s suggestion for dealing with the issue, which isn’t really an issue at all. More a case of no one liking cleaning up.
“It’s completely fine if you aren’t interested,” Jimin says, smiling genuinely. “I just did a lot of researching, and I know you like it when you feel small. I just thought perhaps, you’d like the idea.”
Jungkook is rather flustered by the suggestion, his cheeks getting a dusting of pink to them. “Wouldn’t you find it weird?” Jungkook questions. “It’s kinda different to everything else…”
“If I find it weird, I’d say something. That’s why we have our safe words, baby. If something is too much, we can immediately stop.” Jimin’s fingers are slowly playing with Jungkook’s hair, lacing his fingers through the silver strands.
“So… diapers?” Jungkook murmurs, in the crook of Jimin’s neck. He giggles, but it’s more of a nervous reaction than anything. Because truly, he’s very interested, very much so. But he never expected Jimin to even bring it up, let alone want to try it and yet now he’s sitting casually discussing it. “You wanna try them.”
“To be honest, I think you’d look cute.” Jungkook gives his arm a playful slap for that, teasing, always teasing. Not that Jungkook would have it any other way. “Especially in the cute bunny print ones i saw.”
Jungkook pouts, embarrassed. Even if the idea has him excited, he tries to play it cool, which is rather pointless because he slips up less than an half an hour. “When are you ordering them?” He blurts out, much to Jimin’s apparent delight. “I just— I mean.”
“Next day delivery, baby.” Jimin grins, holding up his phone.
It’s a few days before they actually get to experiment, work way too busy for any downtime. Perhaps it’s for the best, Jungkook always finds it’s extra easy to slip harder when he’s not gotten the chance for a few days. Jimin makes it easy too, waking him with soft kisses, and gentle nudges, planning to get him into that headspace before they’ve even had breakfast. Jimin likes it as much as him, the caregiver role coming so naturally.
It’s after their usual morning routine that things take a different turn. “Should I make breakfast, hyung?” Jungkook asks, fresh out the shower, towel still wrapped around his waist.
Jimin curls around him like a cat, head resting on his shoulder. “Hmm, I think you’re too small for that Jungkookie. I can’t have my baby hurting himself, you just be good for me.”
Oh, it’s that kind of morning, one of those days when Jimin keeps him babied all day. Not an often event but never not a pleasant one. Jungkook is happy to go along with it, let himself sink into the zone, and just enjoy it. “Okay, ” Jungkook squeaks, “I’ll be good.”
“Good boy,” Jimin coos, stroking the damp hair out of Jungkook’s face. He goes rummaging just beneath their bed for a few moments, comes up with the cutesy pink bunny patterned diaper and a smile on his face. “Can’t have any more little accidents now, bun,” Jimin murmurs.
Jungkook’s face is nothing short of crimson as Jimin picks out his clothes, settling on someone he knows Jungkook is most comfortable in. A black mastermind t-shirt, and basic black sweats, baggy enough that it won’t be noticeably obvious what he’s wearing beneath.
He’s still not quite fully in little space, but he doesn’t have to be to enjoy being taken care of. He’s happy to let Jimin pull the shirt over his head, and tidy up his mused hair afterwards. It's afterwards that Jungkook gets shy again. When Jimin pushes him down onto his back on the bed, pretty pink diaper in hand.
Jungkook whines, hands coming up to hide his face. It’s… a lot, overwhelming as Jimin murmurs “hips up,” so he can slide the crinkly fabric underneath Jungkook’s bare ass. He’s obedient, pliant, as Jimin spreads his legs, adjusting everything so it fits perfectly, tightening the little clear tapes at the side. Going out of his way to ignore the way Jungkook’s cock has chubbed up beneath the fluffy fabric, they can have fun with that later, for now it’s business as usual.
“All done,” Jimin whispers, planting a kiss on Jungkook’s stomach. “You’re too fucking cute.” He chuckles, watching Jungkook squirm in embarrassment, ears burning pink, all bitten lips and blushy cheeks when Jimin pulls his hands away to marvel at his baby's face.
“Daddy, embarrassing,” Jungkook whines, as Jimin finishes getting him dressed, sweatpants pulled up and the toggles tied in a little bow. Jimin gives him a final little pat down and squeezes at the front of his clean diaper, giggling when Jungkook arches into the touch, already a desperate little baby.
Jimin makes them breakfast, fried rice and kimchi. He leaves Jungkook sucking his pacifier in front of the tv, eyes focused intently on the kiddie show, only popping in to ply Jungkook with a sippy cup of his favourite banana milk before they eat.
It’s nothing out of the ordinary besides the extra padding beneath Jungkook’s butt. Jimin thinks it’s cute the way it forces him to waddle as he walks, it makes his butt extra squishy when Jimin gropes it too. The rest of the day is spent the way they spend most of their rare days off, cuddling, watching tv. Much to his delight Jimin even lets him play video games until lunch, which is as uneventful as breakfast.
Jimin easily refills his little sippy cup two or three times, Jungkook isn’t keeping count, he’s a little more unfocused today, hazy, and extra small like he had been the day of the accident. He knows Jimin expects him to use it, keeps sliding an eye down his sweatpants to fondle him, although it’s purely innocent, just checking his baby is still dry, Jungkook always leans into it, seeking out more.
It’s sometime nearing dinner that Jungkook decides he needs cuddles. Plopping himself into Jimin’s lap like a heavy puppy, unaware of his own size as he nestled into Jimin. He traps the chimmy plushie he’s been clinging to all day between them, pushing his nose into Jimin’s neck, still suckling away at the pacifier between his plush lips.
“Cuddles, daddy, pleaseeeee,” Jungkook whines, as if he’s not been on and off of Jimin’s lap all day. Snuggling into him in between his colouring, a game of hide and seek and viewing of iron man 2.
There’s also been multiple refills of banana milk, so much so that Jimin hums in surprise when he reaches down under his sweatpants and finds Jungkook still dry. The whole point of keeping him diapered was so it wasn’t a bother, he could let go whenever he needed and yet Jungkook is still clearly holding it. Huffing when Jimin’s fingers slide over the all too familiar swell of his overfilled bladder, hips cutely stuttering.
He’s clearly desperate again, making an effort not to use his diaper for some reason or another. Jimin seems curious about it, hand moving from his stomach to the front of his diaper, squeezing. He grins when Jungkook whines, hips hitching into the touch again. Jimin is a tease. “Still dry, huh? Why are you still holding, baby?”
It’s ironic all things considered, Jungkook had soaked himself on Jimin’s lap just the other week. Yet here he is, bladder shy about using the fluffy pink diaper for its intended purpose.
“Koo’s shy,” He mumbles, voice small behind his pacifier. The ache in his bladder has been slowly building since this morning. And Jimin is insistent, hands and fingertips roaming his stomach.
“Poor little shy baby,” Jimin coos. But he’s still pressing, thumbs hooking in the waistband,
tugging them down. Jimin shifts Jungkook off his lap, laying him down, silver hair splayed out on the cushions. “Let’s get these off, Hmm? Let me see you properly.” He says, sliding Jungkook’s sweats down and off his legs, settling between them.
Jungkook is hiding again, whining all cute and wide eyed, peeking from behind his plushie. As if that hides his padded crotch and butt from Jimin’s gaze, it doesn’t though, and Jimin gropes and coos at him. “You must be fit to burst after all that milk.” Jimin muses, fingers prodding his stomach, still toned and mostly flat besides the tiny bulge of his overfilled bladder. “Are you gonna be a good boy and go potty for daddy? I'll get you all cleaned up afterwards, might even give you a reward.”
Jungkook’s perks up at that, the idea of a reward from his daddy, and he is very full, almost to the point he’s worried about just how much the diaper can actually hold. “Reward?” He asks, eyes glittering cutely at the prospect. “What kinda reward?”
“It’s a surprise,” Jimin teases. He’s pressed up close, practically crotch to crotch with Jungkook as he slots himself between his thighs. “You get it if you’re a good boy.”
Jungkook pouts. But ultimately he really wants that reward, and Jimin is ever so persuasive, and his fingers feel deliciously good pressing into his stomach. It makes his stomach flutter, the pressure of needing to pee only heightening every touch.
He goes tense, hands tightening around the plushie in his grasp as he tries to just let go; poor lip getting bitten hard as he forces his body to relax. Jimin is whispering sweet praise and pressing on his stomach too. Sickly sweet words of encouragement, good boy, that’s it, let go for daddy.
He whimpers when the first spurt leaves his cock, a trickle quickly turning to a gush. It’s louder than just wetting clothes, the diaper crinkles as it gets filled. It starts getting heavier and warmer, swelling between his legs, forcing them further apart. He feels so exposed, so embarrassed, just a big dumb baby who needs his butt padded. A silly little thing who's too small to even go potty like a grown up.
“Really had to go, hmm?” Jimin asks although it's not a question; it's more of a fact considering Jungkook is showing no signs of stopping, the pattern of the wetness indicator on the front of his diaper all but vanishes. He’s panting by the time he’s finished, eyes teary and pout trembling. “Don’t be pouty, you did what daddy said, you’re a good boy.”
“Reward now?” Jungkook whines
He’s too fucking cute, even for Jimin.
Jimin grabs Jungkook’s cock through the sodden diaper, squeezing— and He's hard already, cock pressing against the fabric. He realises now what the reward is, as Jimin’s fingers tease his cock through the thick fabric. It’s enough to make his hips jump, trying to rut against Jimin’s palm.
Jungkook is a desperate little thing truly, gets as riled up to cum as much as he does to piss himself. It’s endearing, really. “You gonna make another mess?” Jimin smirks,
“Uh-huh,” Jungkook whimpers. “Gonna cum, if you keeping t-touching koo there,”
Jimin hums and doesn't let up, he builds Jungkook up till he’s on the very edge, that’s when he pulls away. Quickly tearing one of the side tapes, so he can slide a hand into the diaper. Jungkook cries out when Jimin curls his hand around his cock, it’s almost cute, how wet it is, still covered in piss and dribbling pre-cum all over his hand.
The noises Jungkook makes are delightfully high pitched, breathy little cries and whimpers that are music to Jimin’s ears. Jimin likes him like that, loud and desperate as he thumbs over the slit of his cock making Jungkook squeeze his eyes closed, and mewl, and buck his hips.
He fucks up into Jimin’s hand quickly, broken whimpers of daddy, daddy, daddy. Jungkook is overwhelmed, so desperate, and Jimin’s hand is so good, tight around him and he’s so close, so so so close.
Jimin doesn't give him permission to cum, he doesn’t get the chance. Jungkook’s already so close that he can’t stop himself and he cums with a pained sound, adorable and pent up, no warning before he’s spurting white in Jimin’s fist and inside the already soaked diaper, so dirty, so naughty.
“Good boy, that’s it.” Jimin murmurs, fisting Jungkook’s cock until he’s fully spent, and whimpering with every shallow thrust he makes into Jimin’s hand.
Jimin pulls him into a cuddle, Let’s Jungkook whine and whimper into his chest. Clean hand stroking his back, letting Jungkook come down from his high at his own pace, he’s thankful for it. Jimin never rushes these things, is always gentle and patient with him.
After thousands of kisses and snuggles Jungkook let’s Jimin take him to the bathroom and change him. It's not as embarrassing as the first time, but he still sniffles and hides behind his plushie while Jimin coos over him, calls him cute and adorable and watches him turn a dark shade of crimson.
He’s big again before dinner, slips back into his usual adult underwear before they order food. “I quite liked the extra padding, it made your butt look bigger.” Jimin teases, Jungkook only rolls his eyes.
“Seriously though, was it good? No weirdness?” Jimin asks as Jungkook curls up next to him, wrapping a arm around his waist,
“Was good, felt really good to just… be babied i guess. You’re seriously perfect at being a caregiver.”
“That’s good, considering you make such a perfect little baby.” Jimin chuckles, pressing a kiss to Jungkook’s cheek.
“Thank you though, for being so supportive.” Jungkook mumbles, nuzzling at Jimin’s neck, “best boyfriend ever.”
“To be honest, it’s fun, you’re cute as fuck when you’re little, and I liked the power dynamic stuff already. It’s so easy to just wanna take care of you, big or little.” Jimin sighs, “and I love you so, obviously your kinks are my kinks.”
“I love you too, but we don’t have to like all the same kinks, hyung.”
“Maybe not, but so far it’s worked out that we do, in fact, like all the same kinks.”
Jimin isn’t wrong, and Jungkook is grateful for that. Having an open minded partner, who you’re head over heels in love with leads to a lot of kinky self exploration, and that happens to be something they both love doing.