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Huening Kai confessed his crush to Yeonjun when they were just trainees, too young and naive to realize he should have kept those feelings to himself. But Yeonjun, being his responsible and empathetic older brother figure, just assured him he was young and that those feelings would go away with time.
"You're underage, Hueningie. I can't take your feelings seriously."
It was Yeonjun's polite way of letting him down gently and Kai should have been grateful that Yeonjun continued to act normal with him. Except he wasn't. The more Yeonjun continued to treat him the same as he always had, the more frustrated Huening Kai became.
He might have been young and inexperienced with love, but he knew that what he felt for Yeonjun was more than just brotherly affection or admiration. His mind was constantly polluted with images of the older bent over or shirtless, his pouty lips wrapped around a water bottle or caught between his crooked teeth.
Sometimes it scared him how consumed he was by his feelings, but he tried to accept his hyung's rejection and pretend like everything was normal.
He should have known he could never be "normal."
As the years passed and they debuted, performing for thousands, they all grew closer. And yet those feelings never seemed to disappear. Instead, they continued to grow and fester in his heart like a disease, slowly leaking out into his bloodstream until it began to poison his mind.
There was something so innocent, so unguarded about Yeonjun that drove him crazy. He was careless, leaving himself in open and vulnerable positions, like he was taunting him. And every night, Huening Kai's dreams became more disturbed with images of him taking advantage of his hyung, ruining Yeonjun until he was nothing but a mess of trembling limbs and teary eyes.
He began to think Yeonjun was doing it on purpose– teasing him. He would ruffle his hair, kiss his forehead, cuddle up at his side like a kitten desperate for affection. Sometimes he would even climb into Kai's lap, move around like he was aware of what it was doing to the younger. He could have done that with any of the members, but he chose Huening.
That had to mean something, right?
Maybe his feelings were being returned. Maybe Yeonjun realized he felt the same but was guilty about Huening Kai being underage.
So he kept his hands to himself until his twentieth year.
And when he confesses again, he fully expects Yeonjun to reciprocate his feelings. What he doesn't expect is for Yeonjun to give him this odd, lost look, as if he had forgotten Huening Kai ever confessed in the first place.
"Oh… I'm not gay," is all Yeonjun says, shifting on the mattress like he's uncomfortable.
Something inside of Huening snaps.
"How do you know?" he counters, completely serious.
"W-What?"
"Have you ever tried it with a guy?"
"No! I'm not gay, I know I wouldn't like it," Yeonjun scoffs, affronted.
"If you've never tried it, then how could you know?"
"Hueningie…" Yeonjun whispers, inching away from him. He's frightened by the intensity in younger's eyes.
"Let me suck your dick, hyung. If you really hate it, I swear I'll give up on you forever."
Yeonjun stares at him, speechless. So Kai leans in, capturing those soft lips in a kiss and it feels every bit as good as he had imagined.
Yeonjun releases a surprised noise, trying to back away as Kai kisses him deeper, pressing him down against the bed. He licks into his hyung's silky mouth, moaning at the feeling of their bodies finally pressed together, finally touching each other the way they were always meant to.
When he finally pulls away and leaves one last kiss against those soft lips, he finds Yeonjun staring at him with narrowed eyes.
"W-Why are you so good at kissing...?" he asks, suspicious.
Huening Kai chuckles, resting a hand on Yeonjun's hips. "I guess you don't know me as well as you thought you did, hyung. Like how much I've been wanting to do this…" he whispers, sliding his fingers beneath Yeonjun's shirt and lifting it up to expose his smooth torso, creamy skin bare of any marks or blemishes.
God, he wants to ruin him.
It takes the older by surprise, an unexpected gasp erupting from Yeonjun's throat when he leans down and sucks one of his dark nipples into his mouth, teasing the swollen bud with his tongue before pressing it between his teeth. Yeonjun jerks like he's been electrocuted, arching his back and raising his hands to hesitantly grip at Huening Kai's broad shoulders.
"S-Shit… that hurts, Hueningie. They're sensitive," the older whines, his voice obnoxiously loud as always. To quiet him down, Kai shoves the hem of his shirt into his pretty mouth.
"Be quiet. Someone will hear us if you talk so loudly," he tells him. Yeonjun just stares at him with wide eyes before nodding obediently.
"Good boy," he mutters, drunk on the power that Yeonjun is gifting him. He leans back down and takes the other nipple into his mouth, pinching and biting at them both until their red and throbbing and Yeonjun is releasing pathetic mewls from behind the cotton fabric clenched between his teeth.
When Huening Kai is finally satisfied with the state of his chest, he kisses his way down his hyung's flat stomach until he reaches the hem of his sweatpants. He tugs them down easily, the loose material setting his pretty cock free as soon as it's past his thighs.
The small length twitches in front of him, half-hard and leaking from the tip. "Cute~" he giggles, wrapping a hand around the base despite Yeonjun's protesting whines and taking it into his mouth.
He's good at sucking dick. He knows he is. He's practiced on enough dildos over the years to warrant saying so. He messily sucks and slobbers all over Yeonjun's dick and that must be the way he likes it because his cock grows to full mass in less than a minute, thighs twitching as he clumsily thrusts into the warm crevice of Kai's mouth.
The shirt falls from Yeonjun's lips as he releases a string of curses, fingers tangling in Huening Kai's mousy curls. It feels weird to see the younger sucking his dick so eagerly but his thoughts are too jumbled to make sense of what's happening, especially when Kai does this thing with his tongue and teases his slit until his toes are curling and there are actual tears in his eyes.
And when Kai pulls off of his cock, his lips coated with his own spit, his eyes are dark and predatory. Yeonjun feels like he doesn’t even recognize him.
“Spread your legs, hyung. I can’t go deep enough like this,” Kai tells him and he finds his body moving on his own, thighs spread out against the small mattress and granting their youngest a perfect view of his puckered hole.
When the kid takes his cock back into his warm mouth, Yeonjun throws his head back and stares at the bunk above them, trying not to focus too much on the fact that this is Huening Kai sucking his dick, choking and drooling on it so much that he can feel spit dribbling down over his balls and between his crack. He doesn’t think much of it until he also feels a delicate finger nudging against his rim, his body jerking away on instinct.
“What the hell are you trying?” he shouts in surprise, staring down at the younger who just tilts his head innocently.
“Shh, hyung. It’s supposed to feel better when you put a finger in,” Kai tells him as if it’s the most obvious thing in the world. Yeonjun’s protests get trapped in his throat when he feels Kai’s long fingers easily slide inside, his back arching off the bed at the intrusion.
“S-Stop… take it out,” he whimpers, covering his mouth with his hand as Huening gets his mouth back on him. He chokes out a strangled moan when the finger inside of him presses against a spot that has sparks flying behind his eyelids, overwhelmed by Kai’s mouth and hand pleasuring him at the same time.
“What the fuck,” he pants, staring at the mattress above him them dumbly. His orgasm takes him by surprise, not even enough time to warn the younger as his mouth falls open and releases a string of moans and curses. He cums into Huening Kai’s mouth, thrusting erratically and shouting when he feels a second finger push inside and ride him through it.
He feels so strange, like his body is going to melt into the mattress. He twitches with every spurt of cum that he releases onto Kai’s tongue, his walls unintentionally spasming around the fingers stretching him open.
When he finally comes down and the fog begins to clear from his mind, Yeonjun lays there and tries to process what just happened. “I’m going crazy…” he whispers to himself.
He barely has time to recover before he feels Huening moving inside of him again, his long fingers scissoring him open and curling against his sensitive prostate. He grasps at the sheets in shock, trying to crawl away as the tears finally fall and slide down his flushed cheeks. “Hueninge… I came already, what are you-”
He’s cut off by Kai’s lips pressing against his own, his body betraying him as he unintentionally melts into the warm kiss. The younger shoves his tongue into Yeonjun’s sweet mouth, tasting and claiming every inch of his pathetic hyung.
“H-Hueningie-” Yeonjun finally manages to get out, his fingers gripping desperately at Kai’s arm to get him to stop moving inside of him. “Seriously, I think I’m gonna pee.”
“Just let it go, hyung. I’ll make you cum like you never have before,” the younger assures him, silencing him with another kiss.
Yeonjun loses control of his body, his limbs unresponsive as Huening continues to abuse his prostate, a fire he’s never felt before spreading through his veins. He whimpers against Kai’s lips, fingers desperately clutching at the younger’s shirt and it only takes a few more careful thrusts of his fingers for his soft cock to start convulsing, milky fluid leaking out of the pink tip onto his stomach.
Huening continues to milk his prostate until Yeonjun is wailing so loud he’s worried the members might hear, finally taking mercy on his hyung and pulling his fingers out of his quivering hole.
Yeonjun looks like he was hit by a truck, his face red and teary, hair disheveled and clothes a mess. Huening Kai thinks he looks beautiful like this, completely wrecked and ruined. But as he watches his hyung try to catch his breath, eyes closed and his perky nipples rising and falling with the rhythm of his breathing, he wants more.
He always wants more.
Yeonjun looks up when he hears the sound of clothes rustling and his eyes nearly bulge out of his head when he’s met with the sight of Kai pulling his shirt over his head, shocked by the sight of his muscular body. “Since when do you have abs?” he questions in shock, pouting at the thought of Huening’s innocent tummy being gone.
"Since I started going to the gym, hyungie," Huening chuckles, tossing his shirt onto the floor before he begins to unbuckle his pants. The sound of his belt seems to sober Yeonjun.
“What… are you doing?” he asks, growing nervous as Huening’s pants fall to the floor as well and the younger climbs onto the mattress above him. When he looks into those dark, predatory eyes staring down at him, he feels like he already has his answer.
“I didn’t cum yet, hyung,” Kai says simply, gripping Yeonjun’s trembling thighs and forcing them apart. The smaller boy yelps in surprise.
“H-Hey… you’re not really thinking of putting that thing in me, are you?” Yeonjun asks, his voice wavering as he stares at the heavy cock hanging between Huening Kai’s legs.
“Sorry, hyung. I don’t have as much self control as I thought.”
“What is that supposed to- hey!” Yeonjun shouts as Kai pushes his legs against his chest, his already gaping hole on display. His blood runs cold when he sees the serious look in those normally innocent eyes.
“Hey, Huening… this isn’t funny anymore, okay? Get off of me,” Yeonjun tries to sound firm but his voice trembles, hands weakly pushing at the younger’s chest.
“This has never been a joke to me, hyung. You’re the one who didn’t take me seriously.”
Yeonjun never gets a chance to respond. Instead, he screams in pain when the head of Huening Kai’s cock shoves past the tight ring of muscle, forcing his body open. His nails dig into the younger’s flesh, trying desperately to push him off as he struggles to get away from the searing pain splitting him apart.
“Forgive me, hyung,” Kai whispers, capturing Yeonjun’s lips in another kiss that makes bile rise to his throat. The younger completely overpowers him, every inch of his body and mind consumed with the pain of having a cock forced inside of him.
“H-Hurts…” he whimpers against Huening’s mouth, turning away as he struggles to catch his breath.
“You’re so tight, hyung. It feels even better than I imagined,” Kai whispers into his skin, fingers gripping his thighs so tightly Yeonjun can already feel the bruises forming.
“You fucking… ah…” Yeonjun gasps, arching his back when Kai begins to pull out, the head of his dragging against his sensitive prostate.
When the younger begins to move, setting a steady pace, Yeonjun feels like his mind is swimming. There’s pain, lots of it, and small bursts of pleasure that become his oasis through it all.
To protect his body and mind, he tries to focus on that.
“Hueningie…” he cries out, throwing his head back as the younger begins to fuck into him like an animal, suddenly slamming their hips together so hard that the bedframe is shaking around them, smacking into the wall. There’s no tenderness, no intimacy for Yeonjun to cling to. He feels like a toy, a slick hole for the boy to fuck, and his ass burns as he’s taken by force.
“Hyung,” Kai moans into his ear, lowering himself so their bodies are pressed together and their sweaty flesh slides against one another. All Yeonjun can do is cry out as he’s fucked into total submission, the fight gone from his body as Kai’s pace grows faster and more brutal with every thrust.
“Ha… ngh…” he chokes out as his prostate is repeatedly abused, his toes curling in the air and his cock smearing precum all over his already coated stomach.
“I won’t give up on you, hyung. You’re mine,” Kai whispers against his skin and Yeonjun finally manages to look at him, his teary eyes meeting warm brown ones.
“Say my name, hyung.”
Yeonjun whimpers, fingers gripping at his flesh weakly. “H-Huening…”
“Again,” Kai pleads, pressing his face into Yeonjun’s shoulder as he fucks him harder.
“H-Huening… ie… ah!” He shouts when Kai suddenly pulls out of him completely, his hole open and clenching around nothing, before he forces himself back in with a vicious thrust that has him drooling, his mouth hanging open in a silent scream.
“I’ll never let anyone else touch you, hyung. You’re mine,” Kai grunts as he finally shoves inside of him for the last time and cums, balls tensing up as he releases into Yeonjun’s ass and claims it as his own.
Yeonjun just whimpers helplessly, his vision blurry as Huening pulls out of his stretched hole and lowers his trembling legs to the bed. He doesn’t even attempt to protest as the younger kneels between them, nor when he feels a warm tongue lapping at his hole, drinking up every ounce of cum that leaks out of him.
“Don’t worry, hyung. I’ll take care of you from now on.”