Work Text:
“Nngh, Aren— hah , please— ” Kaidou cut himself off with a barely restrained whimper as Kuboyasu shifted under him.
The pencil writing out an equation stuttered in Kaidou’s grasp, but Kuboyasu’s hands on his waist dug into the soft flesh and kept him firmly in place. He leaned over Kaidou’s shoulder and murmured into his ear, “C’mon, you can do it. Finish the problem.”
Kuboyasu’s encouragement was enough for Kaidou to shakily nod and will himself to finish writing.
They were supposed to be studying. Technically, they still were— if studying with your boyfriend also consisted of sitting on his cock as you worked. “Motivation”, Kuboyasu called it.
The only thing Kaidou was motivated to do was push Kuboyasu onto the ground and ride him into oblivion, but the guy was too strong for his own good. Any attempt Kaidou made to squirm away from Kuboyasu’s grasp was met with a tightening of the grip he had around his small waist and a quiet chide to do his work, but he couldn’t.
Even so, Kuboyasu wasn’t anything if he wasn’t persistent. Kaidou admired it most days, but in that moment, the constant grind against his prostate only fuzzed his mind with want that was anything but academic.
Kaidou squirmed again, and Kuboyasu shushed him like clock work.
It was almost too much— It was too much. Kaidou’s legs trembled over Kuboyasu’s strong thighs, which only overly sensitized every inch of Kaidou’s feverish skin; His back against Kuboyasu’s defined chest, another reminder of their sheer difference in size. Kuboyasu had to hunch down a little to whisper in Kaidou’s ear, and could wrap his hands around his waist and have his fingertips touch if he wanted to. He had, before. Kaidou had never been harder in his life; But maybe, in that moment, it could have gotten a run for it’s money because Kaidou was aching in every sense of the word.
Tears were already pricking in the corner of his eyes, though whether it was from utter frustration or need, he couldn’t be sure— Probably both.
Kaidou’s determination to finish the study worksheet he was doing multiplied as much as his shaking desire did. He squinted through the wetness in his eyes, but it was a sniffle that gave him away.
Kuboyasu tensed up for a second, but relaxed so quickly that Kaidou could have imagined it. Though, he knew he didn’t imagine the sudden twitch of Kuboyasu’s cock inside of him, and might have sniffled a second time to feel it again.
“Are you struggling, baby?” Kuboyasu’s voice was gravelly against his ear, warm air tickling as it sent a shiver down his spine.
Kaidou should have hated the nickname, but he took a shameful pleasure in being coddled in moments like these. He liked how Kuboyasu could manhandle him, how he could keep him sitting on his cock for what felt like hours when it had most likely only been half of that, how much he enjoyed it.
He whined from the back of his throat and tilted his head back, nodding as he dropped his pencil with a clatter on the table.
“Maybe my baby deserves a reward,” Kuboyasu murmured, mostly to himself. His words still vibrated down Kaidou’s back. “Do you think you do?”
Kaidou blinked and the tears left his eyes, but he could look down at his paper. He still wasn’t sure how long they had been at this for, but he had already been done with most of his study work and only had a couple more pages in his workbook to finish up. The writing grew more shaky as the problems went on, a visual of how tightly coiled the knot in his stomach had gotten the longer he sat on Kuboyasu’s cock.
Kaidou nodded again.
Kuboyasu rumbled when he hummed, and finally thrust up into Kaidou. It offered a little relief that went a long way when they had been in the same position for so long, and Kaidou couldn’t help the short moan that left him. Kuboyasu certainly hadn’t minded it, because he did it again.
It was far too hot in the room. Kuboyasu was already a human furnace on his own, and with the added layers of their clothes, Kaidou felt like he was on fire. Kuboyasu didn't bother stripping as he transitioned them into this position; only his pants were pulled down to achieve the bare minimum while Kaidou was naked from the waist down, and Kaidou’s choker was especially sticky against his skin, as was his oversized shirt.
Kuboyasu was quick to tug down Kaidou’s pants the rest of the way, lifting his hips up to pull them away. Kaidou yelped at the sudden shift of the vein of Kuboyasu’s cock catching against his rim and scrambled forward even more for purchase against the edge of the table, but was roughly pulled down a moment later.
“Hhh— ‘Ren, I—” Kaidou could barely form a coherent sentence. Kuboyasu stilled his hips and Kaidou could have sobbed as he tried to push back against him. He had been offered a smidge of relief but needed more— a greedy desire, but his mind had completely hazed over and he moved on his own to stop himself.
“Ah ah,” Kuboyasu stopped him, apparently the only one who had enough self control to restrain himself. “Patience.”
Maybe patience was Kuboyasu’s thing, but Kaidou neither knew or cared for it and vaguely registered pouting. “P-Please, I’ve been go— hh, I’ve been good, ‘Ren.”
Kaidou heard how pathetic his voice sounded through the fuzz in his ears, but had lost all the ability to dwell on it when Kuboyasu was splitting him open and wasn’t moving, damnit.
Kuboyasu only said, “You think you get to decide that?”
Kuboyasu had sounded menacing in the past, but his commanding tone did things to Kaidou, who was already falling apart at the very seams. Who was Kaidou to decide if he was being good?
Instead of saying anything else, Kuboyasu lifted Kaidou off his cock completely and Kaidou sang his lament. The abrupt loss only made his legs shake more without the support under his thighs, but Kuboyasu’s hands remained on his waist. In another feat of his secret strength, Kuboyasu easily turned him around so Kaidou was facing him in his lap, thighs now snug on either side of his legs.
The change in position threw a wedge in Kaidou’s mind, and somehow seeing his boyfriends face was more embarrassing than sitting on his cock was. Kaidou felt all the blood that wasn’t down south shoot up to heat his face, and he forgot about how empty he felt as he shoved his face into his boyfriends collarbones as a haven.
“Don’t tell me you’re getting flustered now,” Kuboyasu chuckled lightheartedly, easing the mood. Kaidou shakily held onto his shoulders and tried not to die of self consciousness, especially since Kuboyasu was still completely clothed and Kaidou’s bare legs rubbed against the fabric of his boyfriend’s pants. It wasn’t difficult to get insecure around Kuboyasu when he got like this, but his mind was too jumbled to do anything but try to focus on the feel of Kuboyasu’s large hands tracing under his shirt.
Then, softer, “Look at me, baby.”
Kaidou didn’t want to, but lifted his head and looked into Kuboyasu’s eyes through a new sheen of tears in his own.
“You look so pretty in my lap right now,” Kuboyasu murmured, easing Kaidou backwards with a hand splayed over his entire chest. The small of Kaidou’s back hit the edge of the low table and he propped his elbows up to keep steady as Kuboyasu’s hands explored the rest of his front. “So fucking pretty.”
Kuboyasu cursed often, but it still flustered Kaidou.
The view gave him a good look at his boyfriend— The dark purple hair that was slowly losing its shape as the sheen of sweat on his tan face glowed brighter, the pink that was otherwise dusting the high points of his sharp face. Kaidou resisted the strange urge to lean in and lick the salt off his skin, but that was an impulse to worry about another day.
Kuboyasu could have kept him in place with the dark edge in his eyes alone, but his fingers brushed up Kaidou’s sternum through his shirt and to the collar around his throat. He played with the charm that hung off the front, a decorative cross that Kaidou seemed to have a lot of, and against the c-ring connecting it to the snug leather it quietly clacked.
With bated breath, Kaidou watched Kuboyasu’s eyes concentrate on it, just barely fiddling with it as his other hand crept up under Kaidou’s shirt.
Kuboyasu’s gentle hands turned Kaidou’s veins into molten lava with how smoothly they traveled over the soft skin of his stomach and then his chest. He yelped as his large fingers brushed over a nipple, one of the most sensitive parts of him.
Kaidou felt every callus of his boyfriends fingertips as they switched to pinch at the bud and he could only arch his back into it. It was evident just how much Kuboyasu worked with his hands, just how often working on his bike kept his hands rough, but his movements remained gentle nonetheless. Kaidou didn’t realize something of a keen was leaving him until Kuboyasu murmured a quiet, “Shhh, relax, baby.”
Baby . Kaidou melted all over again and eased back into the table to allow Kuboyasu to work his ministrations, but jerked forwards with a gasp when Kuboyasu put the cross charm between his fingers and tugged on it. That, and the hand now steadily working at his chest, would be enough to send Kaidou spiraling into another blubbering mess if Kuboyasu kept it up.
His quickening breath was cut off with every tug on the choker, with every scratch of Kuboyasu’s palm against his ribs. It wasn’t difficult for Kaidou to unravel so quickly, but it surprised him every single time.
“Ah… ah, A-Aren,” Kuboyasu could barely breathe, torn between containing his airy moans through ground teeth and letting his jaw hang open to let them spill out.
Kuboyasu was having none of the quiet Kaidou, though. He let go of Kaidou’s collar to raise his hand and force Kaidou’s mouth open with a thumb between his lips. The rest of his hand engulfed the side of Kaidou’s face as he opened his jaw a little wider, running the finger over the inside of his mouth and over the sponge of his tongue, warm and wet and spit-slicked on his skin.
Kaidou could only watch through half-lidded eyes as the inside of his mouth was explored, and he was unable to contain his noise as Kuboyasu’s hand switched over to his other perking nipple and he had no means of control over the situation. The stupidly hot situation.
“You see? Pretty,” Kuboyasu said as he retracted the thumb from Kaidou’s mouth, taking a particular eye to the string of spit connecting it and Kaidou’s bottom lip.
Kaidou didn’t have it in him to respond when Kuboyasu wrapped his own lips around his thumb, only managing a ruffled, “‘Ren— Nng, you can’t— oh my god.”
The display was so lewd Kaidou’s heart could barely contain itself in his ribcage, and he was hard enough under his shirt that it was straining the material.
Kuboyasu had the gall to look a little smug, too. He had Kaidou wrapped around his finger and knew it, but it didn’t take a lot to render Kaidou limp and babbling at the end of the day.
“Can’t what?” he said when he pulled his finger out of his mouth.
Kaidou whined and shoved himself into Kuboyasu’s ridiculously sculpted chest again. Kuboyasu could only laugh into Kaidou’s ear and wiped off his hand on the back of Kaidou’s shirt before his hands brushed over the hem in silent question.
Kaidou did the job for him with his own shaky fingers, grabbing the bottom of his shirt and pulling it over his head. The cool air of the room did nothing to breach the heat of his skin, especially not when he felt himself tremble under the even hotter warmth of Kuboyasu’s lust-dark gaze.
Without his shirt pooling over his hips, his dick stood proudly in the space between them. Kuboyasu's own cock was still pulled out over the top of his pants, which only made it all the easier for Kaidou to observe their difference in size— their significant difference in size, down to their dicks. Kaidou couldn’t help the zap of electricity that ran through him every time he saw Kuboyasu’s length, and it was enough of a reminder of where he’d rather not be seeing it.
He had gotten so overwhelmed in the moment to remember, but his backside ached and now he could only think of how empty he felt.
“Please,” he could only murmur, but Kuboyasu grabbed his face and brought their faces closer together before he himself could figure out what he was please-ing about.
Kuboyasu asked for him, “Please what?”
His warm breath aired over Kaidou’s lips, which he didn’t realize were parted until then. He didn’t have an answer, but Kuboyasu closed the space between them before he could think about it too hard.
This is where Kaidou really saw Kuboyasu— When he was kissing the life out of him as thoroughly as he did anything else in his life. Not that Kaidou minded a dominant; It was quite the opposite, as was evident.
As Kuboyasu licked into the inside of his mouth, Kaidou could only scramble for balance and wrap his arms around Kuboyasu’s neck. His mind fuzzed to kissing him back, but the rest of the hair on his body stood on end with every pass of Kuboyasu’s hands roaming up and down his entire body, like he was attempting to commit it to memory. Kaidou squirmed under the attention, but Kuboyasu kept him in place.
Soon Kuboyasu pulled away, only to lean back in and lick a stripe up the side of Kaidou’s face from his jaw to his cheekbone.
“Wanna devour you,” he barely grunted before latching onto the underside of Kaidou’s jaw, fully intent on laying his claim.
And by all means, Kaidou didn't mind playing little red riding hood if it meant the monster nudging against his cock would be back inside him, and soon .
“Need you,” Kaidou panted, grappling at Kuboyasu’s back in hopes that it would further make his intent clear. “Please, Aren.”
Kaidou lost all coherency as soon as Kuboyasu growled and grabbed his hips, fingers digging into the plush skin hard enough to guarantee bruises the next morning.
Kuboyasu didn’t even look like he was straining to pick Kaidou up. His strength was always hidden, but this forwardness was only another facet of his inexplicable drive to dominate and prove himself. Kaidou felt the blunt head of his boyfriend's cock nudge against his entrance, which was still slick with lube from when Kaidou was cockwarming him before— Kuboyasu hadn’t bothered with extra prep, which was the first sign that he too was spiraling into a loss of composure.
Next was not offering any warning before he dropped Kaidou onto half of his length; Not that Kaidou was complaining. Kuboyasu had enough control to let Kaidou adjust to the sudden intrusion, but truthfully Kaidou revelled in the burn that came with dancing with the wildfire that was Kuboyasu. He liked the tug and choke and having every meager breath of air in his lungs punched out of him without a second to spare, and as careful as Kuboyasu was otherwise, he had a passion for making Kaidou feel good as the end all.
“You alright?”
It was quiet, teeming with something animalistic and hardly restrained. Kaidou knew that if he said the word, they would stop, no questions asked.
But a fresh set of tears had sprung into Kaidou’s eyes and he knew if he didn’t get fucked that second, he’d die. Probably. Definitely. So he nodded, hoping it would get everything that he wanted to say across— God, yes, if you don’t fuck me like you hate me we’re breaking up.
Kuboyasu managed an, “I love you.” Then he caught Kaidou’s lips again in a bruising kiss and left no room for any further question before he dropped Kaidou down on the rest of his cock, effectively swallowing up the loud moan pulled out of from his core.
This was the only time Kaidou ever let himself be unapologetically loud; Otherwise he was his usual blushing, not-so-virgin self, whose face lit up on fire at the mere suggestion of holding hands with Kuboyasu.
It wasn’t as if he had a control over his volume then, though. Kaidou couldn’t think about how embarrassing he probably sounded when Kuboyasu fucked him stupid the way he was finally doing— with an irontight grip on his hips, fucking up into Kaidou’s tight heat while also pulling him down onto his cock. His eyes were screwed shut as he lost himself in pleasure, something Kaidou noticed before his own eyes were fluttering with every thrust that pressed against his prostate.
He didn’t have the energy to do anything but hold on and take what was the ride of his life, but it was less of a ride and more of Kuboyasu controlling the stuttering narrative. Kaidou didn’t have the comprehension to even close his mouth, as the thick fog in his mind rendered him blissfully unaware of the ridiculously pornographic moans leaving him when it was what egged Kuboyasu on to move faster, harder, somehow.
His stamina would never let up, that much was clear. Every jerk of his upwards was accompanied by a groan against Kaidou’s lips and Kaidou could have drowned in what was one Aren Kuboyasu falling apart just as he was.
Kaidou held onto Kuboyasu’s shoulders as he was bounced, barely needing to work his thighs to stay propped up when Kuboyasu seemed to be using him as he would a fleshlight— and somehow, that made Kaidou more needy with pure want— Need .
“H— Hah, a-ah, ‘Ren, ‘m close—!”
Because every thrust of Kuboyasu’s unfairly large cock split him in half and pressed directly against his prostate and he was sobbing with pleasure. His tears were freely streaming down his face and he felt his neglected dick bob in the air, but it was fucked completely out of his mind as he and Kuboyasu moved as one unit of reckless abandonment.
“Fuck, baby—!”
The taut cord of tension in the air snapped when Kuboyasu lost his composure. His hips stuttered for the first time since he had begun pistoning inside his boyfriend and his grip had become slippery with sweat, but he persevered like he would anything else and bit into the skin right under Kaidou’s choker when he burrowed deep into Kaidou and came.
It came as a surprise that he finished first, as it was usually Kaidou, but there wasn’t a worry of time— When Kuboyasu came, he came long and hard, which gave him a moment to jerk Kaidou off to release until he was painting stripes of white on Kuboyasu’s shirt and up his chest.
Without the sound of skin slapping and their heated moans, the room was only filled with heavy breathing as they panted for air. Kaidou had completely collapsed on top of Kuboyasu without a care for the cum on his shirt or the sticky sweat layered on both of them, and Kuboyasu hadn’t bothered to pull out of Kaidou even when he had grown soft.
Minutes or hours could have passed and neither would have noticed.
Naturally it was Kuboyasu who mustered up the energy to ease Kaidou off him and examine him for any signs of damage, even if Kaidou liked his type of damage. “You okay, Shun?”
“Mmh,” Kaidou hummed, but couldn’t find the will to open his eyes. He was completely and utterly sated for two days, maximum; It wasn’t as if he would be able to walk properly until then. “So good.”
“‘M glad,” Kuboyasu chuckled, but still sounded breathless himself. He was usually on top of cleaning them up minutes after they finished, but it seemed that a lot had been taken out of him from just one round that Kaidou couldn’t fathom continuing or getting up to shower like a normal person just yet.
His eyelids felt like lead but he lifted them anyways so he could savor what was a tired Kuboyasu. His hair was now completely stuck to his forehead and his shoulders sagged as he continued to hold Kaidou around the waist.
“Aren?” he mumbled.
“Yeah?”
“Love you.”
The smile Kuboyasu gave him was genuine, despite his apparent exhaustion. “Love you too.”
Kaidou was ready to leave it there, hopefully until he could regain any feeling in his legs that wasn’t jelly so they could clean up and take a nap together, but Kuboyasu seemed to have other plans.
“We’re finishing that worksheet later, just so you know.”
Kaidou should have expected it, but he rolled his eyes and leaned in to kiss his boyfriend in hopes that it would distract him enough for it to leave his mind.
(It wouldn’t, but maybe Kuboyasu would have some other ideas for motivation.)