His orgasm left him limp and shaky, his skin going hot-cold with fading panic, and Bakugou braced himself for the way he usually was too oversensitive after jerking himself off, unsettled in some way he couldn't define. It felt good but frustrating, not something that helped him get to sleep like how everybody else talked about it; if it felt the same way with Kirishima, Bakugou wasn't sure that he could explain that it wasn't something Kirishima was doing wrong, that Bakugou himself was the problem.
"Okay?" Kirishima asked, hushed. Bakugou peeled his eyes open to find Kirishima looking down at him. He nodded, not trusting his voice. Kirishima gave his cock one last squeeze, then let go and reached over him to grab a tissue. Bakugou watched hazily as Kirishima cleaned him up, tossed the tissue aside, and then gathered him tightly into a hug, slotting them together so that Bakugou's nose was pressed against his neck, just beside his scent gland.
He didn't feel overwhelmed anymore, Bakugou realized. His skin was still oversensitive, goosebumps prickling up his arms and thighs, but when Kirishima rubbed his hands in soothing circles over Bakugou's arms and back, it spread the feeling out more evenly, all over, until it was more like a warm humming, something nice. Kirishima was draped half over top of him protectively, rubbing his thumb gently over Bakugou's scent gland, his own scent thick with reassurance.
"You're doing that on purpose," Bakugou muttered, even as he rolled into Kirishima closer, pressing his nose tight to Kirishima's skin. He felt stupid for not realizing that sex with another person would obviously feel different than getting himself off. Just like when his first heat in the dorms had been terrible because he hadn't felt safe yet, being alone when he was vulnerable just after orgasm had thrown his instincts into anxious overdrive. Being taken care of made all of that oversensitivity feel good instead, his heightened senses of smell and touch focused on Kirishima instead of straining for signs of danger.
And Kirishima felt really, really good. Warm, strong, safe, muscled like some kind of romance novel alpha trope in the trashy books his moms hid under their bed, and Bakugou was disgusted with himself for being one hundred percent a melted chocolate bar for it. He really was a fucking s'more.
"So you really can go all omega-gooey," Kirishima said, voice carrying a hint of tease underneath the thick affection. "I thought maybe you never did, since you're so tense after heats. Is that what you were worried about?"
"Dunno," Bakugou muttered. He really didn't want to talk about it, wanted to just wallow in his pheromone haze now that he finally got what all the goddamn fuss about sex was. Still, he owed Kirishima at least some kind of explanation. "When I do it myself, it's not like how everybody else talks about it. Thought I might be fucked up or something."
"But it felt all right with me?" Kirishima asked.
"Don't get a swelled head about it," Bakugou grumbled, shoving half-heartedly at Kirishima's chest. "It's pheromones and shit, whatever. But yeah, better. See, I told you just doing it was the answer."
"You seem pretty sensitive too," Kirishima commented, drawing two fingers lightly over the curve of Bakugou's shoulder. Bakugou opened his mouth to tell him to fuck off, but Kirishima pinching his nipple unexpectedly made him choke on the words. "You know that's common, right? For strong-spectrum omegas to dislike or be neutral about doing it alone."
"The fuck do you know about it?" Bakugou wanted to know, rolling onto his back to glare at Kirishima. Kirishima shrugged, lifting a hand to smooth Bakugou's hair back from his face.
"Did some research online once I started thinking you might like me back. I was afraid I was doing some alpha thing that pissed you off." Kirishima grinned, eyes crinkling. "Turns out you're just a cranky son of a bitch."
"Un-fucking-believable." Bakugou rolled his eyes. "Maybe if you spent more time researching geometry instead of omega porn you wouldn't be fifteenth in the class, dick for brains!" Kirishima laughed, and Bakugou lifted his still-heavy arms to dig fingers into his hair and yank. "Lose the pants, it's my turn."
It's treelines's turn next!