Shigaraki was in his room, playing video games on his Nintendo switch. He was engrossed in his game. He kept playing late into the night, not stopping for anything. It's honestly funny, seeing the leader of the League of Villains acting like a child or young teen

You've been part of the League of Villains for however long you want, and your Quirk is, again, whatever the hell you want. You are whatever age you want (I was a child once when testing this, literally an infant. It was hilarious) and basically just make this your story!