Lori
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[NSFW] FIC - "bad idea, right?"
🕑 Added 2025-08-14 16:38:00 +0000 UTCBKDK | post-canon | established relationship | semi-public sex | consensual somnophilia
Maybe next time, bakudeku should go camping on their own.
=
BAD IDEA, RIGHT?
Izuku had always possessed the ability to sleep through just about anything. Which was why, after a full day of hiking, he was passed out while Katsuki glared up at the roof of their tent, devising ways to explode the neighboring tent without having to move.
Sero’s snoring sounded like a car engine stalling. Repeatedly. With a little gravel avalanche tossed in for variation. No wonder Kirishima had brought his heavy duty noise canceling headphones.
The only reason Katsuki hadn’t already murdered him was because Izuku was plastered to his side. One thick thigh rested over his hip while a scarred arm clutched his waist and his stupid cute face was shoved into the crook of Katsuki’s neck.
Was the nerd likely to wake if he got up to turn Sero into a human projectile? No.
Was Katsuki going to risk it just in case? Also no.
So instead he fumed in sleep-deprived silence.
Except then Izuku began mumbling something in his sleep, and his lips skimmed the sensitive skin between Katsuki’s neck and shoulder. Despite the heat, a shiver raced through him.
“Izuku?” he whispered, turning his head just enough to get an eyeful of sleeping nerd.
The other boy didn’t stir, and his breaths remained even. An impossibly deep fondness pulled at the corners of Katsuki’s lips. He pressed a kiss to those unruly curls that smelled of campfire smoke and pine trees.
Izuku shifted a little, and his hips pressed into Katsuki’s side, a breathy little sigh escaping his lips. Katsuki stilled, eyes narrowing in the dark.
“Izuku?” he whispered again, louder this time. He received only a soft moan in response. It went straight to his dick.
So that he wouldn’t jostle him too much, Katsuki slowly turned to face him. For agonizingly long minutes, he remained still, his cock filling, as Izuku made small, sweet sounds and haltingly rubbed himself against Katsuki’s hip.
When Katsuki was certain the nerd was truly asleep and not simply messing with him, he leaned in close enough for warm breaths to fan against his cheek. With a smirk, he gently licked a stripe across those soft lips. Even unconscious, Izuku’s mouth parted on a soft whimper and his hardening erection twitched in his shorts.
His own hard-on was getting increasingly uncomfortable. Reaching up, he nudged a curl from Izuku’s brow. Exactly how much could this nerd sleep through?
Shifting closer, he slid his palm down Izuku’s back, his skin hot beneath his tee. When his hand reached the small of Izuku’s back, he wormed his fingers beneath the waist of shorts and what he knew to be dorky All Might briefs. His breaths stuttered as a firm, plump buttcheek filled his palm.
He squeezed lightly, encouraging the sleeping boy to grind their hips together harder. Savoring the way Izuku arched into him, Katsuki dipped his middle finger between those perfect globes and then froze.
His brows rose as the tip of his finger encountered a damp slick. Then he drew back, giving that deceptively angelic face an incredulous look.
“You goddamn tease,” he mumbled, fingers diving back in. He groaned, a delicious ache tightening in his gut, as he rubbed the loosened bundle of skin at Izuku’s entrance.
When the fuck would he have prepared himself? Maybe when Katsuki had been helping Kirishima with their tent? Either way, his hole was relaxed and wet, waiting to be filled. Tentative, he pushed two fingers in at once.
Fuck, the slide was so easy, silken walls welcoming him in. Izuku moaned, his muscles twitching, hips pressing back against the intrusion, seeking more.
“Shoulda told me you wanted it,” he said against Izuku’s shoulder. “Not like I would’ve said no. Love being inside you. Love making you feel good.” It didn’t matter that Izuku couldn’t hear him. He still meant every word. God, he was such a sap.
They hadn’t bothered with a blanket so it wasn’t difficult to move behind the boy. He must have prepped himself with the intent to mess around but then knocked out from the exhausting day. Even with Katsuki gently arranging his limbs and Sero doing his best to imitate a distressed donkey, Izuku didn’t stir.
Once he was satisfied, he draped himself over Izuku’s back and guided his cock to his entrance. Biting his lip, he squeezed his eyes shut as he sank into Izuku’s ready, eager body.
Fuck, he felt so good. Tight and hot and perfect. Without waiting, he began to move, rolling his hips in deep thrusts. He braced his weight on his elbow as his other hand gripped a muscular thigh. He wished he could see where their bodies connected, Izuku’s asshole red and stretched around his thick cock.
He rested his forehead against Izuku’s shoulder, biting his tee as he fucked into him. If Sero’s snoring wasn’t keeping anyone else up then no one was going to mind the gradually increasing sound of his hips slapping into the cushion of Izuku’s ass.
“Izuku,” he panted, shoving faster and harder into that tight heat. “Izuku.”
“Kacchan?” came a quiet, confused voice. Katsuki didn’t stop, thrusting even harder so that his name transformed into a low, long moan.
“Yeah, baby.” His fingers dug into the thin skin over Izuku’s hip. “Moan for me. This what you wanted? You wanted me inside you? Fucking you full of cum so you can be leaking me all weekend?”
“Oh god,” Izuku cried into his arm, words slurred with the dregs of sleep even as he shoved back to meet each frantic thrust. “More. More. Kacchan, more. Make me come, make me come, make me come.”
“Shit,” he hissed as he slammed deep, balls tightening, cock pulsing and spilling inside. Beneath him, Izuku trembled, keening softly as he came, his fingers clawing at the sleeping bag.
With an exhausted exhale, Katsuki collapsed against Izuku. Their bodies remained connected as their breaths grew even and their pulses slowed. Izuku gave a happy sigh and snuggled tighter to Katsuki’s chest. A moment later, a contented little snore indicated he was once again out.
“Unbelievable,” Katsuki muttered. In the morning, he would regret not cleaning up right away, but that was a problem for later. He wrapped his arms around his nerd, buried his face in messy curls, and finally felt the tug of sleep pull him under.
~fin
