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Hawks was... perplexed. Shocked, gagged. Gobsmacked, even. He knows Dabi doesn't have the best education but... he's not that dumb. Or so Hawks thought. Because it's a stupid question. The answer was staring him dead in the face and he couldn't see it.
The night started off completely normal, Dabi curled in the hero's blankets as said man put on his pajamas. (Which consists of shorts. Just shorts.) Dabi felt the bed dip under Hawks' weight as he started crawling to his side of the bed. (And, no, Dabi does not blush every time he thinks about the fact that they have sides.)
"Oi, birdie, I gotta question," He said as he sat up, causing Hawks to stop his crawling and rest on one of his arms with a raised eyebrow.
"What's up, hot stuff?" He asked with a curious frown. Dabi shifted his weight so that his one arm held him up, his other hand played with a loose string of the blanket.
"There's like one week out of each month where you won't have sex with me. Why?" Dabi asked, completely straight-faced. Hawks opened his mouth then closed it. He made a face, then touched the scar just under his right pec to make sure it was still there. He opened his mouth again then closed it once more. The hero huffed in disbelief.
"You're being serious?" Hawks asked, shock dripping from his voice, eyebrows almost reaching his hairline.
"Y.. Yes? Why do you say it like that?" Dabi frowned, causing Hawks to jump a bit, repositioning himself to sit on his heels.
"Dabi, I have a vagina!"
"I know."
Hawks looked around in disbelief, as if looking for Dabi's critical thinking skills.
"Dabi, look me dead in my eyes and tell me you're being serious," Hawks is shocked beyond compare.
"I'm being serious- What the hell is up with you, birdbrain?" Dabi asked, eyebrows furrowed in mild annoyance.
"I have a period! You know? Where I bleed? Every month?"
"I thought that was only for girls," Dabi blurted, before thinking. Hawks was, for the most, gagged. Because... What? It's not like Hawks was the first trans person Dabi has ever met. He lives with Magne for crying out loud! Not to mention, Hawks was like 98 % sure Twice has said something about periods before. They all used they/them pronouns for Kurogiri per their request, too. This is not a foreign concept to Dabi. And it's not like he doesn't know what periods are because, once again, Twice, and obviously, Toga.
Dabi has also, for lack of a better word, been living with Hawks. He uses the bathroom on a semi-regular basis, surely he would have seen pads and tampons. It's not like Hawks makes an effort to hide it, he has literally complained about cramps before; he has asked to use Dabi's warm hand as a heating pad. Hawks was sitting in front of Dabi with his shirt off! His top scars were staring at him, in the face!
The pro hero took a deep breath.
"Dabi, darling, hot stuff, light of my life, even. L-" Hawks was cut off by an annoyed Dabi.
"Get to the point, Hawks." He scowled through gritted teeth and crossed arms.
"I'm a trans man, meaning I was born in the wrong body. A girl's body." Hawks sighed, "Men can have periods, trans men have periods. Hence the week I don't wanna have sex, cuz, yanno. I'm bleeding. Out of my vagina. That I have. Becau-" Hawks was cut off again.
"Okay! I get it!" He practically screeched, face bright red.
"Wait- What did you think these were?" Hawks asked as he frantically gestured to his top scars. Dabi semi-shrugged.
"I dunno. Figured you got 'em in a fight or had a surgery for health reasons," he confessed tentatively, causing Hawks to burst into laughter.
"Shut up," Dabi growled in embarrassment, furthering Hawks' laughter.
"You're so cute," Hawks smiled after his laughing fit. Dabi, of course, blushed like a madman.
"Dabi, babe, you seriously didn't know?" He cupped Dabi's face after he sat in front of him with crossed legs, their knees touched.
"No. You said you were a dude, so," He shrugged as an answer.
"A dude who just happens to have a vagina?" Hawkes smiled with a raised eyebrow.
"Yes!" Dabi hissed out in embarrassment. Hawks pecked Dabi on the lips with a smile before he moved to lie on his side of the bed, Dabi laid back down as he did so. They faced each other; Dabi scowled while Hawks smiled.
"So-" "Don't start, Birdie," Dabi interjected, "did you have any theories as to why I didn't want to have sex for those weeks?" he asked as his grin grew wider.
"Not really," Dabi shrugged, "All though religion did cross my mind, but I crossed it off cuz it wasn't perfectly consistent," he answered with a sigh. Hawks giggled. Honest to god, giggled.
"Oh, you are too cute, Dabs," Hawks smiled before he moved to kiss the villain again.
"Shut it, birdbrain," Dabi mumbled, before kissing the hero. (No, he did not smile, fuck you very much.)
Hawks cupped Dabi's cheek as they kissed. He rubbed his thumb over the staples between his dead and healthy skin. And no matter how much he denied it, it was one of Dabi's favorite things ever. Dabi loved. Loved! The way Hawks treated his skin all the same. He didn't shy away from touching it, he didn't favor the healthy skin. Hawks treated his skin all the same.
Maybe Dabi wasn't the smartest, and maybe they kissed each other to sleep. Maybe Hawks was drunk on Dabi's warm kisses and maybe Dabi felt a little dumb for his question. But nobody needed to know because they were protected by the night sky, their blankets, and Hawks' fluffy wings.