#gunhan

smut warnings: anal sex, blow jobs, mommy kink, strength kink, dacro, hair pulling, biting/marking, mentioned dollification, feminisation, dick referred to as clit one time

It wasn't something Gunil really thought about at the time. It was an innocent enough question. Obvious, even. Being asked about their roles for if they were a real family wasn't crazy and neither was his answer, at least in Gunil's opinion. In hindsight, maybe he should have thought about it a little further.

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"Daughter again? Seriously?"

Jumping at the sound of Hyeongjun's voice, Gunil spun around in his chair to face him leaning against the bedroom doorframe. He didn't look as pissed off as his words implied—more curious than anything else—but Gunil's cheeks still felt warm. He'd already forgotten he said it at all, let alone that it wasn't the first time, but Hyeongjun bringing it up made it hit home. Fans describing group relationships as father and son wasn't unusual. Doing it himself with father and daughter, especially given their actual relationship, definitely was.

"Sorry," Gunil cleared his throat when Hyeongjun raised an eyebrow. "Didn't think about it, I guess."

"So that's just your unconscious thought, then? That I'm the daughter?" Hyeongjun stepped into the room, perching on Gunil's desk to tip his head up by the chin and leaning in close. "If I didn't know better, I'd think you wanted me to call you daddy."

Gunil's hands trembled on his thighs, but as much as he wanted to reach out, he was stuck frozen with Hyeongjun studying him so intensely. The smirk when he found whatever it was he'd been looking for sent ice through Gunil's veins, the sinking feeling in his stomach made worse by Hyeongjun pulling away to stand.

"Never gonna happen."

His voice dripped with venom as he backed away towards the door—curiosity replaced with a smugness rarely directed at Gunil—and just like that, Hyeongjun was gone. Gunil couldn't tell if he'd majorly fucked up or started something that would lead to his early demise. He was as hard as he was confused, either way.

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Of course Gunil was concerned about things getting weird after whatever that was, and in a sense, they did. Just not at all in the way he expected.

Hyeongjun didn't change, exactly, but he did push his appearance boundaries further than ever before. There was no problem with that at all—his grown out hair dyed red, more experimental makeup and outfits suiting him beautifully—and everyone was supportive of it as always. The issue was the difference in how he started treating Gunil.

Being put together for the Beautiful Mind photoshoot was fine. Watching the other members touch and cling and drape themselves over each other was normal. Knowing it wouldn't be the same with Hyeongjun—being generally less intimate in public spaces—was totally okay with Gunil. Getting the complete opposite threw him so off balance that it was almost impossible to focus.

Having him wear a wig, darkly-lined eyes and one of the shortest skirts Gunil had ever seen him in was one thing; how seriously Hyeongjun was taking the shoot was another entirely. The worst part had to be Hyeongjun suddenly resting his head on his shoulder, muttering something about their height difference with Gunil going stiff at the unexpected contact, and it took everything in him to not make the photos look awkward.

To Hyeongjun's obvious annoyance, Gunil couldn't help laughing when they looked at each other afterwards, giving a threadbare excuse for the behind cameras rolling that Hyeongjun thankfully took without question. Whether he actually picked up on it or didn't realise it was bullshit didn't matter. It was enough to give Gunil a needed breather. They looked good together when he managed to check out the photos, at least.

There were a few raised eyebrows when the others joined for group shots, but it was easy enough to ignore with the two of them being separated for the most part. Only the high camera angle had them side-by-side again, but having everyone touch in some way made the lack of distance far more bearable. Every brush of contact still seared through to Gunil's skin. It was easier not to think about it. Pushing everything away was something Gunil was beginning to think he'd have to make a habit of if Hyeongjun was planning to keep up whatever it was that he was trying to achieve.

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It all came to a point that was almost exactly the way it had started, Gunil spinning around in his chair when Hyeongjun cleared his throat from the open doorway. The biggest difference was that he'd appeared in one of Gunil's old t-shirts—fitting loosely on himself so it fell almost entirely off Hyeongjun's slim frame—and even with it hitting mid-thigh, Gunil was fairly sure he had nothing underneath. That wasn't a good sign for his future sanity.

"Hey," Gunil tried to be normal about it, purposely keeping his gaze locked onto Hyeongjun's as he walked over. "Everything alright?"

"I've been thinking," Hyeongjun didn't humour the attempt, immediately sitting in Gunil's lap with his arms around his neck, leaning in closer when Gunil tried to move his head back. "You like the idea of me being your pretty little girl, don't you?"

Gunil couldn't tell if it was a trick question. Usually he would assume it was a joke, or at least be able to get some kind of context from Hyeongjun's expression, but he was keeping it almost entirely neutral. Only the way his eyes flickered over Gunil's face, searching for something, gave away that he was being genuine. Seeing no point in lying, Gunil managed a jerky nod, and that was enough for Hyeongjun to relax for a moment. It didn't last, the smug smile that had been haunting Gunil finally making a return, and he knew something terrible was coming.

"Knew you'd like it—" Hyeongjun paused to bring Gunil's hands to his waist over the shirt, barely ghosting their lips together before continuing. "Mommy."

The sweet sound when Gunil's grip tightened made his head spin further, surging forward to kiss Hyeongjun properly, running one of his hands up to the back of his head to keep him from pulling away. Gunil had no idea why he had such an intense reaction—not something he'd ever considered being called—making it yet another thing that was easier not to think about. Of course Hyeongjun wouldn't let it go so easily.

"God, you really are sick," he giggled after forcing Gunil back by fingers wrapped around his throat. "Are you gonna fuck your little girl, mommy? Can you make me feel good? Please, mommy. I want it."

Left awestruck by his sudden acting juxtaposed with the slight difficulty breathing, Gunil was too slow to react before Hyeongjun shifted in his lap, not fully realising he was hard until Hyeongjun rolled his hips. Hyeongjun was clearly in charge even if he was trying to make it seem otherwise. Gunil was more than happy to take the bait.

"Yeah. Yeah, I can," he gulped when Hyeongjun raised an eyebrow, knowing what he wanted but struggling to get the words out. "I… mommy can make you feel good."

Hyeongjun grinned at how easily he gave in, releasing Gunil's throat to rest his hands daintily on his shoulders, non-verbally showing he wanted Gunil to take over. Nerve wracking as it all was, Gunil tightened his fingers in Hyeongjun's hair—relishing in his gasp when he tugged lightly—and skimmed his other palm up one of his bare thighs, groaning when he found he'd been right about Hyeongjun wearing nothing underneath. Trying to stay focused, Gunil pulled him closer by his boney hip, kissing across Hyeongjun's jaw and down his neck to where it connected to his shoulder.

None of it was too far out of the ordinary, Gunil always taking his time to pick apart and make the others unravel, but there was one major difference. Just as he was soft-spoken in everyday life, Hyeongjun was never loud when he was being touched. Whether it was still an act or the situation actually getting to him just as badly, hearing Hyeongjun's high-pitched, whiny moans as he sucked on the sensitive skin went straight to Gunil's dick. Even worse was when he brought his hand further around, intending to just teasingly brush over Hyeongjun's hole, but he jolted back in shock as soon as he made contact.

"Mommy got me so wet, right?" Hyeongjun murmured close to Gunil's ear. "Bet you could just slide right in."

"You're actually insane," Gunil shook his head in disbelief at Hyeongjun's forwardness. "You really do want to kill me, huh?"

The soft hum he got back was enough of an answer. For all that it seemed like Hyeongjun didn't like physical contact to the outside world, Gunil knew how badly he actually craved warm skin. Hyeongjun's chipped nails trailing down his chest was agonising, but Gunil leaned forward for him to pull his shirt over his head when he reached the hem, letting his hands roam freely until the way he squeezed got too embarrassing. At least Hyeongjun didn't try to fight it when he took his off, too.

Gunil stood up from the chair easily without putting Hyeongjun down, the way his giggle turned into a yelp of surprise settling proudly in his chest until Hyeongjun wrapped his legs tightly around his waist and dug his nails into his shoulders. He lowered Hyeongjun slightly without thinking, quickly moving his arm around to support under his ass, but it was too late. The way it put pressure on Gunil's dick made him groan and he couldn't help himself from holding Hyeongjun closer to keep it. Of course he had to make it worse.

"Think you're strong enough to fuck me like this?" Hyeongjun asked breathily as he squirmed in Gunil's grasp. "I think you can. Mommy has such big muscles and I'm so tiny, just the way you like it, right? I—"

He was cut off by a gasp, his usually droopy eyes opening comically wide with two of Gunil's fingers easily slipping inside, taken so off guard it was difficult not to laugh. Gunil wasn't sure what Hyeongjun had expected to have happen by riling him up, but he was happy to take advantage of it. What he was asking for certainly wasn't impossible. Still having half his clothes on was the problem.

"Put me down," Hyeongjun grimaced when Gunil pulled his fingers out, looking like he almost regretted saying it. "Wanted to do something else first, anyway."

Placing Hyeongjun gently on the floor, Gunil backed up to sit on the end of the bed, lifting his hips when Hyeongjun knelt between his legs and tugged on the waistband of his pants. There would always be a shyness to being laid bare in front of the others, but having Hyeongjun eyeing him hungrily—so small and lovely at his feet—would make anyone feel on top of the world, in Gunil's very biased opinion.

Hyeongjun's teeth weren't as sharp as Jungsu's or Jiseok's, but the sting in his thigh still made Gunil gasp, the bites only getting harsher as he made his way further up. It was difficult to not close his legs around Hyeongjun's head when he deepened the marks, blooms of purple against his skin, barely held back by the nails digging into the other side to stay forced apart. Hyeongjun wasn't stronger by any means, but it helped Gunil stay grounded. He'd take what he could get.

"So pretty like this," Hyeongjun mumbled to himself after pulling back to admire his work, pressing his thumb into the darkest bruise, only looking up at Gunil when he flinched. "You wouldn't be able to fuck me if I ate you out though, would you? Too good at it."

Gunil had to turn his gaze to the ceiling to breathe. Hyeongjun was right about being too good at it, knowing full well that it would make Gunil come too quickly and not be able to give him what he wanted afterwards, but the way he was talking was so out of character that it was almost as painful as his teeth. To Gunil's horror, Hyeongjun still crept closer to his dick after he nodded, keeping eye contact as he took the head in his mouth.

Usually—despite Gunil's warnings—he was fine going all the way to the base quickly, so stopping halfway was enough of a red flag in itself. It took a second too long for what he was doing to hit him, Hyeongjun's eyes shining with tears just moments after he stopped blinking, not giving Gunil a chance to wrench him back by the hair before they spilled down his cheeks.

"Mommy, please," he wailed, weakly scrabbling at Gunil's thighs when his fingers tightened. "Fuck me. Please, please, I need it. Need you, mommy. I—"

It was ridiculously easy to scoop Hyeongjun off the ground, shutting him up with a biting kiss as he pressed the tip of his dick inside and let gravity do the rest. Standing that way couldn't get him very deep, but Hyeongjun still tried to lower himself further, nails digging into Gunil's neck and shoulder without seeming to care about his hiss of pain. None of it mattered when he really was wet to the point that Gunil didn't want to know how much lube he'd wasted.

Another tear ran down as Hyeongjun desperately tried to bounce himself on Gunil's cock, but realistically, he just wasn't strong enough to keep it up for more than half a minute. Gunil wasn't sure if he was either—his thighs already hurting from the bruises on top of the effort to stay standing—but Hyeongjun's whimper when he wrapped his arms around his body to snap his hips forward was too dizzying not to try. It finally gave Gunil the confidence he needed.

"Is this what you wanted?" he kept his voice low, slowing his movements entirely to make Hyeongjun huff in frustration. "Pretty little girl wanted mommy to use her like a doll?"

Hyeongjun's jaw dropped, ears burning almost as bright as his hair, his whine pitiful when he nodded after getting over the shock. The confirmation and Hyeongjun going almost completely limp—taking the doll part seriously in a way Gunil hadn't actually meant—had Gunil's heart pounding even harder. If he hadn't considered the mommy part before, he really hadn't thought about something like dollification. He knew they were both too close to delve into it properly, but it would definitely be a conversation for later.

Light as he was, and for all that Gunil really didn't want to put him down, Hyeongjun was still too heavy to stay that way any longer. His confused little sound when Gunil pulled out to lay him on the bed was devastating, the tears welling up again even more so, but the drawn out moan he let out when Gunil climbed above and pushed in again was worth it.

His wrists felt too fragile in Gunil's hand when he raised them above his head, all of Hyeongjun so tiny beneath his broader body in a way Gunil hadn't fully comprehended before, and the way he was acting made it seem like he really could break. Hyeongjun's thighs twitched at Gunil's sides with every snap of his hips like he was fighting with himself to not bring his knees together, his boney chest heaving with every sniffled breath, barely managing to keep his arms up as he writhed against the bedcovers. Pretty. He looked so, so pretty.

"You really do like me like this, don't you?" Hyeongjun quietly broke Gunil from his trance with an expression he couldn't quite place, somewhere between awe and discomfort. "Me too. Feels good."

There was definitely something deeper to what he was saying, but Hyeongjun snapped back into the persona before Gunil could say anything about it. He arched his back with a sugary-sweet moan, tightening around Gunil to get him moving properly again, and it wasn't like Gunil could deny what Hyeongjun wanted. Nobody ever could.

Having Hyeongjun wailing beneath him was mind-numbing, his chanting of 'mommy, mommy, mommy' too much for Gunil to cope with for much longer, knowing he had to make him come before he lost his mind completely. Looking down at Hyeongjun's dick leaking against his soft stomach gave him an idea.

"Really did get you wet from this," Gunil bent to press kisses against the side of Hyeongjun's neck, the different angle making his breath stutter. "Play with your clit for me. Want you to come on mommy's cock."

Gunil lifted his head just in time to see Hyeongjun's eyes roll back, only needing to loosely wrap his long fingers around himself before his body tensed, curling in on himself as much as he could with Gunil still fucking into him. Watching Hyeongjun's come hitting his chest brought Gunil close to the edge, just about to pull out when Hyeongjun freed his other wrist to loop around Gunil's shoulders and draw him closer.

"Inside," Hyeongjun used the last of his strength to cross his ankles behind Gunil's back so he couldn't move. "Please, mommy. Please come inside me."

It wasn't like Gunil was really being given a choice, locked in place with Hyeongjun whimpering beneath him, but he didn't think he would've been able to anyway. Hyeongjun was making himself almost unbearably tight as if he was trying to force it. Gunil was powerless in it, burying himself as deep as he could and dropping his forehead to Hyeongjun's shoulder as he spilled inside.

Random patterns being traced over his back helped Gunil breathe more steadily again, gently pressing his lips to Hyeongjun's collarbone before pushing himself up on his hands. Hyeongjun's soft smile as he reached up to run his thumb across Gunil's jaw made his heart flutter, but it was his words that turned it into an ache.

"Thank you," he whispered like a secret, sucking in a shaky breath when Gunil frowned. "For doing this without warning. For not asking questions."

The timing wasn't right to ask exactly what he meant, but Gunil was fairly sure he knew what Hyeongjun was getting at. They could bring it up again when he was ready. For the time being, Gunil would happily take all of the soft, sleepy affection he could get before Hyeongjun decided he felt too gross to stay laying there without cleaning up any longer. Maybe it was embarrassingly sappy to the others, but it was always Gunil's favourite part.