Slytherins–- this is a group who laughs when Neville falls off a broom and breaks his wrist. And what if we had Harry there, who had always been the one laughed at, who had a nice thirst to prove himself, who had green trim on his robes instead of red? This Harry still stepped out in front of Malfoy’s best sneer and demanded Neville’s Rememberall back–- though he got a detention from it, not a Seekership. When kids in the Slytherin Common Room tossed jeers at the pudgy feet of Millicent Bulstrode, Harry rose up to do something about it. When Quirrell shouted “troll in the dungeons, thought you ought to know,” and Harry overheard that there was a girl in the bathroom crying, he still ran off to make sure she got out okay. Harry did not ask Millicent to come with him; this was not a boy who asked for things. When he had asked for things, Dudley had laughed, Petunia had scowled, and Vernon had said, “no,” or just kept reading the newspaper like he hadn’t heard anything at all. But when Harry went, Millicent bunched up her robes in her hands and followed.

In which Tsuna isn't Tsuna but Tsunako, and lived with her parents in Italy for a few years before circumstances made moving to Namimori seem advisable. And changes spiral out from there. For the prompt Xanxus/Tsuna - genderswap; "don't look down on me because I'm a woman."

Izuku’s never run into this problem before with anyone else, but it’s still not much of a problem. “Oh, that’s alright,” he says. “I don’t have a Quirk.” Tsukauchi stares incredulously at him, and then looks at the iron bar that Izuku is currently straightening with his hands. Midoriya Izuku does not let his lack of a Quirk prevent him from being strong. Also known as that one AU where Izuku follows the ridiculous training regimen of Saitama from One Punch Man and becomes stronger than anyone ever imagined he could be.

Class 1-A's second day ends with a bang.