Kaoru loved teasing his boyfriend.
That was anything but a secret, what which their personalities and the small, playful jibes they tossed back and forth. It didn't matter whether they had guests or not, because if someone decides that eating a meal with both an Ootori and a Hitachiin was a good idea, then that was on them.
Not only did he like to tease and play coy, but he liked to just watch the love of his life. The bright smiles that lit up Kyoya's face when he was really enjoying himself, the calm serenity that played on his features when he painted, and what was happening now. Red stained across Kyoya's plump cheeks and the bridge of his nose, little huffs and puffs spilling from his pink lips, and the jeans that he recently bought refusing to button over his flab. It was just too cute, too sexy, and Kaoru drank in the sight whenever he happened upon it.
He couldn't tell if the flush was due to embarrassment or exertion, getting something with that little give over Kyoya's pampered form was a challenge. He should probably announce his presence in a moment, put the man out of his misery, but the thought was cut off by the small hum of triumph Kyoya made when the button finally went into the hole.
Honestly… Kaoru knew that wasn't going to last long. He doubted the zip could go up, a little of Kyoya's doughy belly peeking through the gap, pushing the fabric aside. Also, the button was being pulled rather harshly, the waistband cutting into his beloved's sweet chub.
Before he could open his mouth to warn Kyoya, the button gave up, and the jeans burst open once more. That was never unattractive, the sight going straight to Kaoru's dick, and he couldn't help himself.
"Your fat belly burst through another pair of jeans?" He smirked, stepping into the room and delighting in the fact that Kyoya blushed even deeper. He couldn't help but hug him from behind, pressing kisses into his hair and the shell of his ear, hand on those beautiful love handles, which still managed to overspill the busted jeans, "I don't know why you bother buying them anymore."
Not that he wanted him to stop, of course. It was more that it was something of a waste, but he could always re-sew the button and donate them. Still, he loved that he could make Kyoya so beet-red just from a couple of words and some heavy petting.
"Because my boyfriend gets a hard on whenever he sees something burst off me?" Kyoya answered smugly, guiding his hands to the large, soft rolls of his stomach, revelling in the attention, "I'm still trying to give off the impression that I'm not actively gaining weight, remember? I can take a few murmurs of disapproval about my new… girth, as it were, but having our sex life be the talk of the tabloids isn't that appealing to me."
Kaoru grinned devilishly as he slipped his hand lower, lifting Kyoya's belly a little to rub at him through his boxers. He could feel how tight the jeans had been himself, and so his other hand pulled them down a little. The soft pants Kyoya had devolved into were addicting, his plump backside rubbing against Kaoru's own erection as he squirmed against him.
"What's there to disapprove of?" Kaoru breathed, voice low and husky, "You're so beautiful like this. You look so taken cared of… So well-fed and plump. You're so amazing… Such a good boy."
Kyoya keened, revelling in the praise, hips pushing into Kaoru's hand a little more. It was a contrast he couldn't get enough of; Kaoru's sleek, toned form pressed to his soft, curvy one. He's swear blind that Kaoru's ass was the best, but finding himself attractive actually made sex even more enjoyable than he had previously. It was the little things that reminded himself of his fat body – the jiggle of his ass, the fact Kaoru bathed every inch of flab with love and attention, the sensation of fingertips digging into his thick thighs. Even now, Kaoru was gently lifting his belly out of the way so that he could get him off, and if that wasn't extremely hot, he didn't know what was.
"It's all yours," He gasped, hand on the hand Kaoru had on his gut. He guided him, letting him squeeze and fondle and feel how heavy he was getting. It was starting to take up more of his lap when he sat down, and recently – after the large dinners Kaoru loved to spoil him with, he had to spread his legs to take some of the pressure off his stomach. It only got even more interesting when Kaoru brought out desert, feeling so overstuffed and pleasured as he slowly, lazily rutted against his belly, his dearest rubbing his stuffed, taught gut.
He stifled a moan as Kaoru shoved his underwear down, teasingly light strokes pushing him farther and farther to the edge, the pad of his thumb swiping over the head of his dick. Kyoya could feel Kaoru's erection, the denim rough against his bare ass. He was a mess but managed to gasp out a request for Kaoru to pull his jeans down, which was met with his belly bouncing a little as it was dropped, and his instruction being followed with a lot of gusto.
Kaoru was almost shaking as he rubbed against his hard on, those beautiful cheeks so soft and rotund. So peachy and plump.
Kyoya climaxed with Kaoru's name on his lips, and cum dripping down his thighs, covering the overhang of his belly. It seemed that all he needed to send him over the edge was Kaoru's dick teasing his entrance, even if it didn't enter. He was still breathing heavily from the exertion, cheeks red and a small sheen of sweat on his brow.
"You're so hot…" Kaoru grinned, absolutely in awe of his boyfriend, before being surprised by Kyoya pushing him down on the bed, straddling him. He was heavy, much heavier than he'd ever been, and he was basking in the glow of pride it gave him. Although Kyoya had his legs spread, they still touched – if only slightly.
"And you aren't finished," Kyoya smirked, his paunch pressing against Kaoru's crotch.
This was going to be an amazing night.
A/N: Shout out to anon on Tumblr for the awesome prompt - "Your fat belly burst through another pair of jeans? I don't know why you bother buying them anymore." With Kyoya and Kaoru.