Here is a story on a way that Charlotte could have ended in a happier direction. There's more action than usual, and a bit of payback.
Quirks, the world called them, but to Yuu Otosaka they would always be abilities: a plague upon humanity that had stolen everything from him. Once, he'd been on a mission to cull them from the world, but now, they were everywhere and society accepted them as something to be celebrated... Yuu disagreed.