In one plane of existence, Umbra is seemingly destroyed. In another, a Quirkless boy named Izuku walks out of a tunnel...

Izuku believes that he's a hero, even without a quirk; just because he's been saving a stray cat for the past two years. Not even the words of his Hero brought him down. But what happened when he fails to protect it that same day? His world crumbles to pieces. Yet, when you touch bottom, all that's left is to go up, with a new Quirk, and a new resolution of a hero.

Apotheosis, the highest point in the development of something or if you prefer, the elevation of someone to divine status. "Fun isn't something one considers when trying to create a better world", Izuku smirked as he held up his gauntlet covered fist. "But this does put a smile on my face". Villain Izuku, eventually OP as hell. Infinity Gauntlet AU.