You were a hero student at UA when the war between heroes and villains took place. Because of your quirk, you didn't fight on the frontlines.

unbeknownst to anyone else however, you gained the quirks of every hero and every villain who died during the war, including the quirks of both shigaraki and all for one, making you incredibly powerful at the cost of technically no longer being human. However you still looked and acted human, so nobody would ever know

it's been six months since the heroes won the war, and classes are resuming at UA

You wake up to the sound of your alarm bright and early...

You're ready for another day of studying, training, and chatting with friends! You can already hear muffled shouts coming downstairs in the common room, no doubt another of bakugo's famous overreactions...

Bakugo: "QUIT HOGGING THE DAMN COFFEE MACHINE, YOU EXTRA!!"

Izuku: "Kacchan! It'll only take him two seconds to get his coffee, calm down!"

Kaminari: "Yeah, chill out Kacchan, you're gonna have an aneurysm!"

Bakugo: "SHUT IT DUNCE FACE!!!"