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Kento wanted to treat Yuuji right, in so far as he could treat his underage lover right while not doing the right thing by breaking off all contact. Ending things before Yuuji became more attached, before they went too far, before he took from the boy things that could never be returned and weren’t deserved, would have been what it took to really take care of him. That would have been the moral and just thing that allowed Yuuji to live as normal a life as possible. He’d considered it, after Yuuji’s confession of feelings for him, but he’d never followed through as he should have.
Oh he’d made plans. He’d practiced what he would say to gently turn Yuuji down. He’d intended to go to Gojo and make it clear that he’d no longer be training Yuuji, to put distance between them so the teen’s feelings could dissipate. He’d sat up, late into the night, reminding himself over and over that no matter how far under his skin Yuuji had managed to get, no matter how much warmth and affection filled his chest when the teen smiled up at him, no matter how much he might have wanted, that it couldn’t ever happen, no matter how his alpha teeth itched to sink into that unblemished, thoughtlessly offered neck.
All of those plans had fallen through about thirty seconds into trying to reject Yuuji. All it had taken was brown eyes full of hope and warmth and, yes, love turning on him in anticipation for him to crumble. Where he’d meant to say “I am flattered by your feelings but I can’t return them” he’d instead agreed to ‘take things slowly and see where they went.’ Yuuji had been so pleased, tackling Kento to the ground and hugging him so tightly he’d found himself bruised later.
He wasn’t in the habit of lying to himself, so he knew the reason he’d failed to follow through was because he hadn’t wanted to. He could say it was because he hadn’t wanted to hurt Yuuji and go on and on about how he would keep things chaste and not let it get out of control, but none of it would be genuine.
He kissed Yuuji for the first time that same day, tipped the boys face up before they parted for the evening and tasted his lips in a kiss that no one would dare to call chase. He’s sent Yuuji away, unsteady on his feet and glassy eyed, and hadn’t even been able to regret it. How could he, when Yuuji had been so pretty and flushed after and it felt so right in the moment.
He accepted that he was going to pursue Yuuji and the best he could do while doing so was making it a good experience for the teen. He took him on dates, when they had time between their usual responsibilities and Yuuji could get away without his friends asking too many questions, treating it as much like a ‘normal’ relationship as he could. When Yuuji reached for his hand in public he didn’t draw away, even when disapproving eyes fell upon them. They saw movies, went out anywhere Yuuji wanted to visit, and spent many evenings in his apartment as well, talking or training or playing video games at Yuuji’s behest. He spoiled him when he could get away with it without Yuuji noticing, good food and little gifts and arranging his schedule to suit Yuuji’s needs. He let Yuuji set the pace when it came to intimacy, asking for nothing but always happy to give.
Things were not progressing slowly. Yuuji was…well he was a teenage boy, and eager. He liked to kiss, stealing kick pecks constantly, leaning up for playful, sweet touches, begging for lingering, deep kisses that left them both breathless. He liked to cuddle. Liked to touch and be touched in any way he could manage, making himself at home against Kento’s back in the kitchen, in his lap on the couch, and curled up against his body in the bed no matter how many times he was told to sleep on the couch.
If Kento was a better man he would deny Yuuji’s frequent requests for sleepovers instead of weekly setting boundaries he didn’t enforce.
He wouldn’t nose against Yuuji’s neck while sliding his hands down a taut stomach to slide under a hiked up shirt, drinking in the way the omega’s breath caught and trembled when his fingers tweaked pebbled nipples. He wouldn’t slide his thigh between the teen’s legs for Yuuji to rock against, voice high and shaking as he brought himself to completion. He certainly wouldn’t rut against the perfect curve of Yuuji’s ass, or slide his cock between firm thighs, grinding against where Yuuji was damp and hot through his underwear.
Sometimes without the barrier of underwear, pressed tight to Yuuji’s sweet little cunt, gliding between velvet soft, soaking folds, catching at his hole while his fingers played with cock and clit, but never quite pressing inside. Not with his cock anyway. He’d certainly pulled Yuuji up to hover above his face and gorged himself on both of the omega’s holes more than a handful of times, had slipped tongue and fingers into tight, greedy heat and pulled the most beautiful noises from Yuuji.
He held himself from fucking Yuuji but the line was blurry at best and the differences between what he allowed and didn’t allow arbitrary at best. Maybe he was trying to leave Yuuji with something untaken. Maybe he was just waiting for Yuuji to ask, so he felt better about it.
Either was it was less than a month out from Yuuji’s confession where Kento found himself planning to cross the final line. Yuuji had sent him a series of messages, first reminding Kento that he’d be staying over all weekend and then becoming increasingly vulgar as he shared just what he hoped would happen.
If Yuuji wanted to ‘Finally feel him inside’ then Kento would oblige, he wasn’t strong enough to do anything else. But he would do it right. A nice dinner. Candles and low lighting and even some flowers, because Yuuji was young and beautiful and would blush prettily, because he deserved nice things, even if they were a bit silly. He bought new sheets, silky and petal soft, promising the utmost in omega comfort.. One of Yuuji’s favorite movies was waiting to be started after dinner, a horror film that always saw the omega half in his lap and hiding his face against Kento’s neck. He set up his bathroom, with his mind on a shared shower before the main event, both to prepare and to relax.
Kento prepared himself mentally as well, swearing to himself that he would focus on Yuuji and Yuuji alone, bring him pleasure until the teen was wet, open, and loose for him, until he felt he couldn’t possibly take any more, and only then would Kento mount Yuuji properly. He would take it slow, fill the omega inch by inch, fuck him gently, and ensure he only felt good during it. He wouldn’t knot him, that was too much for a first time, but perhaps they would work up to it soon enough.
He knew exactly how he would handle things.
“Nanamin,” Yuuji greeted with all of his usual warmth and cheer when he stepped into Kento’s apartment, a big smile on his face. He looked perfect and sweet and not at all like he was about to ruin Kento’s carefully laid plans. “I missed you.”
Kento smiled. “I missed you too. I have dinner waiting.”
Yuuji paused in sliding his shoes off, head tilting to the side as if in thought. He looked up through long lashes, a deceptively innocent blush stealing across his face. “Well I thought…Um. Can I show you something first?”
Kento nodded, eyebrows rising slightly. Yuuji’s smile was a little wobbly, usual confidence lacking, as he stepped into Kento’s space and took hold of his wrist. They exchanged a long look, Kento’s expression expectant and Yuuji’s uncertain, before the boy drug his hand down and around his body then pressed it to his ass. Kento squeezed reflexively, the ever present arousal he felt around Yuuji burning hotter; he pulled the teen closer, aligning their bodies before he realized he was doing it.
Too late to stop before Yuuji was leaning up to kiss him; what could he do but close part of the gap and meet him halfway. They fit together with the ease of many long makeout sessions, Yuuji’s lips parting just enough to Kento to nip at the full jut of his lower lip, to suck it into his mouth and drag his tongue to trace to the curve, to lap to Yuuji’s tongue. He squeezed the curve of Yuuji’s ass again, relishing the slight give and the way warm, firm flesh shaped to his palm.
Yuuji’s hand slid to cover his own, taking hold and guiding him upwards. He followed willingly, unconcerned that Yuuji was trying to escape his touch since the boy was doing his utmost best to get Kento’s tongue down his throat, and was rewarded when his hand was pushed past the band of Yuuji’s track pants. The omega was bare beneath and Kento grabbed hold greedily. His fingers sank into the space between sculpted cheeks, guided by Yuuji towards his…body warm, flat, round-
Kento pulled himself from Yuuji’s mouth, regretfully, and drew back to get a better look at his boyfriend. Yuuji’s face was cherry red, his lips slick and parted around panted breaths, and his glossy eyes darting around to look everywhere except at Kento. He took a moment to breathe in, exhale slowly then, fingers tapping against the object pressed flush against Yuuji’s hole, asked: “Is that a plug?”
Yuuji shuddered against him, gripping Kento’s shirt as his lashes fluttered. He nodded haltingly. “Mmmhmm. I…I got myself ready! For you.”
Yuuji’s breathless admission was hit with all the force of being kicked in the gut; for a moment all Kento could do was stand there, dumbstruck with his hand down Yuuji’s pants. Then, swallowing hard, he gripped the round base of the plug and gave it a little tug. Yuuji yelped, lifting onto his toes; the plug slid back smoothly, with no resistance to be felt. Kento felt around, fingers tracing the slick shaft of the blug, about a fingers width thick just below the base but swiftly thickening. Lube was smeared around Yuuji’s hole and wet the skin around and below it in, as if it had dribbled out past the plug.
“Yuuji, you must be so wet.” He murmured, pressing down on the plug. It sank back into Yuuji’s body with ease. Kento wanted, more than he could ever recall wanting anything else in his life, to see how Yuuji’s tight, dusky hole looked now, worked open and stuffed full, sloppy went by the omega’s own actions. He wanted it so badly it hurt, or maybe that was just the sudden rush of blood to his stiffening cock.
He pulled his hand free and, ignoring Yuuji’s noise of protest, took the omega by the shoulder and spun him to face the door. A hard tug did away with his pants and exposed Yuuji’s ass to the air of the apartment.
“Bend.” He rasped, arousal pooling thick and heady in his belly when Yuuji obeyed without hesitation, putting his hands flat on the door and pressing his hips back. “Good. You’re such a good omega.”
Yuuji shuddered visibly, a surprised keen filling the air. It was cut off quickly and Yuuji cast an embarrassed look over his shoulder; the flush now went all the way to the tips of his ears. Kento smiled at him indulgently but once the teen was facing away the smile melted into something hungry, matching the need throbbing in his chest.
He wasted no more time getting his hands on the soft flesh, digging his fingers in hard enough to indent the skin and turn it white beneath his fingertips and spreading.
There was no helping the groan that escaped him. A heart shaped plug, topped with a sparkling yellow gem, sat protruding from Yuuji’s hole. The usually tight furl of muscle was stretched around the dark metal shaft; a deliberate buff of air made it clench tremble. Yuuji’s skin was glistening and wet from cleft down to cunt, where lips were parted just enough to give a flash of pink insides. His cock hung, heavy and dripping clear leak, between his legs. He smelled like something that should be on Kento’s tongue, melting down the back of his throat.
He tugged at the plug again, cock twitching as he watched Yuuji’s hole slowly, so slowly, spread open around the thickening girth of the plug. It was bigger than he expected, not a small started plug but something with weight and width. It took time to reach the thickest point, where the bulb because to curve back in, and it was nearly as wide around as Kento’s cock. Yuuji had chosen wisely, it seemed.
He pushed it back, fast and with force. The noise the plug made sinking back into Yuuji was nothing short of obscene, wet and squealing as more lubricant dribbled past his rim.
“Oh, oh, fuck, Nanamin,” Yuuji swore, head dropping down to hang between his shoulders. “Please, please, I’m ready, you can just-” He rotated the plug, adding a little pressure to grind it down into his omega’s body; Yuuji’s voice broke then hitched.
“How long did it take you to open yourself up?” Kento asked idly, working up a rhythm of push and pull with the plug. Yuuji’s hole dripped with the slick he’d worked into himself, he was absolutely sloppy with lube and the filthy sounds as Kento fucked him on his toy rang louder and wetter as he picked up pace. “Yuuji, answer me.”
Yuuji’s toes curled against the ground. “Weeks. I’ve been doing it for weeks, to be ready for you.”
Kento licked the back of his teeth; his stomach twisted. He could imagine it, Yuuji flat on his back with his feet planted and knees high, or maybe he’d done it standing, leg raised on a chair, body sweat slick and shaking as he fucked his fingers into his tight hole.
He fumbled with his belt, needing to get his cock free, slacks suddenly much too tight for any measure of comfort. He didn’t bother doing more than pulling his cock through the slit in his boxers, hissing through his teeth when he came free. The air was a shock of cold against his heated flesh, the head was already slick and red as it bobbed before him. He stroked it lightly, at the same pace he fucked the plug into Yuuji’s hole.
“I thought about you, Nanamin.” Yuuji said, pushing back against the plug. “While I did it. I always thought about you, about your fingers stretching me instead, about your tongue, about how much bigger your cock would be inside, I-AH!”
Kento tossed the plug that he’d yanked free far less delicately than he should have aside. It hit the ground with a dull thud, spinning away to parts unknown; Kento didn’t watch, didn’t care about anything that wasn’t getting his cock inside of Yuuji’s dripping, gaping hole as soon as possible.