Thread by @bakubaji

skts week day 3: NSFW, alternate anime (mha/bsd (omi’s quirk is chuuya’s ability, tsumu’s is dazai’s)), only one bed, “don’t tempt me.”
@sktsweek #NSFWSktsWeek2023

additional tags: trans atsumu, mentions of injuries (nothing graphic), dirty talk, piv sex, creampies, intimacy

It was a shitty mission. Long and exhausting and seemingly going wrong at every possible turn.
Kiyoomi and Atsumu got back to their single hotel room at well past four in the morning, tired and much worse for wear, especially Atsumu who never bothered to put his all into a fight—

not physically at least—when he had Kiyoomi acting as his damn guard dog.
“I’m showering first,” Kiyoomi grunted, not swayed by the dirt and blood dirtying Atsumu’s clothes and skin. If he didn’t want to sit in his own filth, he should’ve tried to dodge better.

“Whatever,” Atsumu replied, heading towards the bed with single minded determination. Kiyoomi caught him by the back of his shirt collar and tossed him to the floor by the wall.
“Don’t you even fucking think about it, Miya,” he threatened,

unmerciful even as Atsumu looked up at him with a pout and those big brown puppy eyes. “I have to sleep there too, and if the sheets are dirty, I’m making you change them and you’ll be sleeping on the ground for the rest of the mission.”

“Yer such a dick,” Atsumu muttered, but he crossed his arms and slumped back against the wall, so Kiyoomi knew he wouldn’t be going anywhere.

Disgustingly enough, the shower water took a while to run clear after Kiyoomi stepped under it, and he couldn’t even bear to touch himself until the surface grime was gone.

Normally, he’d use his quirk to help, alter the gravity until the blood and dirt was forced off of his skin, but he didn’t have the brainpower for that kind of subtle manipulation right now. if he tried, he’d probably bring the whole building down around them.

It took a long time to get clean, and a bit longer after that to take care of the scrapes and little wounds he’d been collecting like stamps during this mission. Finally, clean and mostly dry, he shuffled back out into the bedroom,

sighing when he saw Atsumu nodding off against the wall, head dropping to one side.
“Get up,” he called, nudging Atsumu’s leg with the toe of his hotel slipper. “Go shower, I’ll get some food sent up.”

“Mngh,” Astumu replied, but he struggled to his feet and lurched towards the bathroom while Kiyoomi flipped through the delivery options still available at this hour.
The food arrived before Atsumu emerged from the bathroom,

but the smell must have encouraged him to finish up and get out, because by the time Kiyoomi got the containers laid out on their little coffee table, Atsumu was stumbling over in a bright white bathrobe and wet hair.

“You’ll get sick,” Kiyoomi chastised, pushing over the karaage because Atsumu liked it best.
“It’ll dry,” Atsumu responded around a mouthful of chicken. Kiyoomi grunted in disgust, but his hunger won out and he didn’t bother lecturing him. Not tonight anyway.

The sun was rising by the time they brushed their teeth and fell into bed—together, because the MSBY couldn’t be bothered with intricacies like “two twin beds, please,” so they had a single queen instead.
Kiyoomi was vaguely ashamed to say that he was getting kind of used to it.

One thing the agency had done right, at least, was putting them up in a nice place. They’d been here for three weeks already, weeding through the lowest of the low every night trying to get to the bottom of things, but at least the bathroom was new and sparkling,

and the bed was damn comfortable.
Beside him, Atsumu groaned, long and low as he eased onto his back. “Hey, Omi, can ya do the thing?”
Kiyoomi sighed. “There’re four stories above us right now. Unless you want all of them collapsing on you, I’m not risking it.”

“Come on,” Atsumu whined, squirming uncomfortably. “Just a little. I’ll stop ya if it gets too much.”
Kiyoomi gritted his teeth, but it wasn’t really worth the fight. “Fine. Hand.”

Atsumu brushed their fingers together briefly, a safeguard in case Kiyoomi’s quirk came out too strong, and Kiyoomi let Atsumu’s gravity sink deeper, a gradual pressure until Atsumu was almost gasping for air, every muscle limp and loose in his body.

Kiyoomi held it for a few long seconds before easing up, slowly releasing his quirk until Atsumu was decompressed once more, chest rising and falling deeply as he filled his lungs again.
“That’s fuckin’ perfect,” Atsumu groaned after a while,

fllexing his fingers like he was testing a whole new set of limbs. Kiyoomi knew first hand how all-encompassing that deep pressure could feel, how it just squeezed the tension out of aching muscles and left you tender and soft.
“Alright. Sleep now.”

Atsumu was quiet for a while, long enough for Kiyoomi to drift into a state of half-consciousness at the sound of his steady breaths. And then he had to go and speak.
“Hey, Omi, can we… y’know?”

Kiyoomi wished he’d already been asleep so he could be spared this nonsense. “Are you serious? It’s almost 6am. You just put stitches in your own arm.”
“Yeah, and?”

Kiyoomi groaned, smothering his face into his pillow. All things considered, Atsumu was a better hero partner than he’d have ever expected, especially when it came to sharing a space like this. One thing Kiyoomi had not been prepared for, though, was Atsumu’s fucking libido.

He’d heard of Atsumu’s reputation before they started working together; pro-hero Silence may not have had the flashiest quirk, but his charm and looks, paired with the way he controlled a fight the second he appeared had garnered lots of fans,

and Atsumu seemed more than happy to give them the time of day (if they were attractive, willing adults, of course, though things like gender, mutations, etc. didn’t seem to matter much to him).

Maybe it had been silly, but Kiyoomi had assumed it was more of a “he really likes sex” thing, not so much a “he’s horny, like, all the fucking time” thing. He’d clearly been wrong.

It was fucking annoying, and Kiyoomi thought he’d done a really good job ignoring his advances and shooting down his shameles flirting… at least, at first. But he wasn’t blind, and he certainly wasn’t immune to Atsumu’s ceaseless charm. Embarrassing.

It had taken a week and two days of living together 24/7 and sharing the same bed before he gave in. And then he’d given in almost every day since.
“Atsumu,” he rumbled, eyes still not open. He wanted to /sleep/, dammit. “Don’t tempt me.”

Atsumu paused for a moment, and then his warm fingers were trailing up Kiyoomi’s arm, up to his neck, cupping his jaw so gently. “I want to,” he murmured, his voice close to Kiyoomi’s ear. “I wanna tempt ya, Omi.”

Dammit. Kiyoomi was convinced there was some sort of flaw to his quirk, something that made Atsumu’s gravity too strong to resist. Fuck it.

“You’re unbearable,” he hissed, reaching up to lock Atsumu’s hand in place and hauling him closer until Atsumu was draped half on top of him, practically purring with satisfaction.

Already, Kiyoomi could feel how hot he was with arousal. “Insatiable,” he said with a punishing bit at Atsumu’s lips. Atsumu let out a breathless giggle. “Insufferable. Impudent. /Impossible/.”
“Look at ya, so smart, Omi. Y’should write a book. A thesaurus, maybe.”

“It’ll be a bestseller,” Kiyoomi murmured, already losing himself in the taste of Atsumu’s clean skin against his lips as he bit and licked and sucked his way down his neck. “‘A Hero’s Guide to Dealing with Miya Atsumu’ by codename Jupiter. All your little fans will eat it up.”

“Yeah?” Atsumu breathed, arching slightly into Kiyoomi’s touch, his mouth. They were slowly moving, Kiyoomi pushing forward and forwards until he was more over Atsumu than the other way around. “What’ll ya write about? Will ya write about this, ‘bout how good I am for ya?”

“I’ll write about how noisy you are,” Kiyoomi pinched one of Atsumu’s nipples to make him gasp, proving his point. “How you can’t sleep until you’ve come, and you won’t let me sleep either. How this,” he snuck a hand into Atsumu’s boxers and cupped his pussy,

already hot and damp against his palm, “is always so ready for me. You want it?”
“Yeah,” Atsumu sighed, pushing down against Kiyoomi’s hand. “‘M always ready for ya.”

Kiyoomi didn’t feel so tired anymore. He finally pinned Atsumu’s back to the mattress, rolling over until he was pressed over him, not bothering to hold his weight up as he stole Atsumu into a filthy kiss. “Get them off,” he mumbled into Atsumu’s mouth.

Atsumu already had his hands down, wiggling out of his boxers and pushing Kiyoomi’s down too until they were bare against each other, Kiyoomi’s erection smushed between Atsumu’s pussy lips, warm and wet and a perfect fucking fit.

They stayed just like that for a while, Kiyoomi rocking down just a little, just enough to encourage Atsumu to grind up against him, rubbing himself off on Kiyoomi’s shaft.

Atsumu’s nails dug into Kiyoomi’s shoulders, retracing the red lines he’d been weaving into Kiyoomi’s back for almost two weeks. Kiyoomi barely felt the sting.

“Omi,” Atsumu finally groaned when he’d had enough of the teasing. Pressure alone could never get him off, he needed something inside, something to clench up on as he came. Fingers were fine, but he preferred Kiyoomi’s cock, and Kiyoomi wasn’t strong enough to deny him.

“Yeah, alright. Like this?”
Atsumu nodded hungrily, squeezing his hand between them to grab hold of Kiyoomi’s cock, smearing his own juices over the shaft as he stroked it.

Kiyoomi was usually adamant when it came to condoms, but they were both clean, Atsumu was on birth control, and he just felt /so/ good.

“Just like this,” Atsumu breathed, guiding Kiyoomi’s cock to his hole, teasing the head through the slick that had gathered, and slowly releasing him to sink in.
Kiyoomi sucked in a ragged breath as he slid effortlessly deeper, Atsumu’s cunt welcoming him in so sweetly.

Fuck, he felt so good Kiyoomi almost regretted holding out for the first week. Hell, he’d been acquainted with Atsumu for years before this, even if they hadn’t been that close.

Wasted years, years he could’ve spent fucking into Atsumu just like this, slow and deep and warm, pressed together with barely enough space to breathe, lips planted on the corner of that pouty mouth, feeling every breath on his skin.

It was okay, though; he was making up for lost time.
Tonight was a slow and lazy fuck, none of the rampant hunger of the first night or the breathless chase of the night Kiyoomi almost lost control, almost sucked himself into a black hole of his own making.

Atsumu had ridden him into the mattress, gasping and shaking as he came, crying silently into Kiyoomi’s shoulder as the adrenaline faded.

Kiyoomi didn’t move much, keeping himself nice and heavy over Atsumu, rocking just enough to stimulate.

It was good, perfect even, and he knew it was the same for Atsumu, could feel it in the way his breaths picked up, stuttered in his chest, came out as little moans and whines as he pressed back.

When Kiyoomi was deep and close, Atsumu would grind up, rub his clit against Kiyoomi and tremble at the touch. When Kiyoomi pulled out a little, Atsumu would arch up and clench around him like he couldn’t bear to not have him inside.

That’s how they came: Atsumu trembling and crying out as his cunt squeezed around Kiyoomi’s cock, Kiyoomi moaning as he dropped his head into Atsumu’s throat, gasping at the heat of his own cum filling Atsumu up.

“Stay like this?” Atsumu asked, his hands wrapping around Kiyoomi’s back, hugging him close and stroking gently down his spine. Kiyoomi melted into the touch.
“We’re dirty,” he murmured, but he didn’t move, didn’t even pull out, and Atsumu hummed happily beneath him.

“S’okay. I’ll get fresh sheets t’morrow, ‘kay?”
Kiyoomi hummed softly in response, and they finally drifted off to sleep, the ache and weight of the day dissolving in the warmth of their joining. The blackout curtains kept the room dark, and there was nothing to worry about.

Shouyo and Bokuto had the daytime shift, and they’d keep everything safe until evening, but until then, nothing existed but Kiyoomi and Atsumu and the little cocoon they’d made for themselves.

Kiyoomi was learning that he slept his best when he was wrapped up in Atsumu’s arms.

~end~

(atsumu is not in fact horny all the time—at least, not when he’s not sharing a bed with omi.) they’re so soft. i love them

link to top

https://twitter.com/bakubaji/status/1620759369800642561

day 2:

https://twitter.com/bakubaji/status/1620495446102900737