Prompt from the Kink Meme: Kirishima gets oversensitive after using his quirk too much, and somebody (Bakugou) fucks him until he's so overstimulated that he cries

Apparently bad things really did come in threes, Bakugou thought wryly, as the firefighter closed the distance between them. Tall, tan, and jacked as hell, he was a strong contender for the single hottest person Bakugou had ever seen in his life. He was covered in soot and sweat that contoured his ridiculous muscles, making them look even more defined, and his clinging black tank top didn’t do much to hide the rest of him, either. His strong cheekbones and jaw had smears of black on them too, and Bakugou had the absurd thought that he wanted to lick them clean. Bakugou didn’t think it was possible, but he felt himself turning even redder. He would barely have been able to talk to someone as attractive as him on a good day, and he was about to have to explain to him that he’d tried to burn down his fucking house because he was being petty on Twitter. Super.

“Bakugou?” Bakugou shuffled on his feet, hovering over Kirishima and looking at the ground with stormy eyes. He glanced up to glare at Kirishima, a silent dare to call him out on his odd behavior no doubt. Kirishima forced himself not to tense. Whatever Bakugou wanted, he was about to show him and Kirishima had to get this right. Bakugou was all about showing and not telling. Kirishima nearly bit his tongue to keep in a squawk of surprise when Bakugou suddenly dropped to his knees next to him, shuffling forward until he could press his forehead to his thigh and hide his face against Kirishima's leg. Kirishima opened his mouth, questions on the tip of his tongue, and he barely managed to catch them before they could be given voice. Bakugou was trembling minutely, his entire frame so tense his muscles were twitching under Kirishima's gaze. “Just. Don't say anything,” Bakugou muttered, hands clenching in his lap tightly. “Please,” he whispered, a short choked sound.

“I-” He stuttered, trying to gather enough brainpower to talk. “M’sorry, I-I can’t-” And he really couldn’t, just couldn’t help himself from dropping back down on the dildo, couldn’t stop the filthy moan from leaving his mouth. He was so fucking turned on, and despite the fact that he might be in the process of ruining his friendship with the most important person in his life, he just couldn’t stop. Kiri’s eyes felt like fire on his skin and it was just dragging him higher, higher, higher. Bakugou likes to dress up. Kirishima catches him.