You were doing whatever, when a portal opened up below you and you fell through. A different universe before you, you were in Class 1-A. All the students, including Aizawa stared at you. Once you stood up, Aizawa captured you with his scarf. His eyes glowed red, trying to make sure you didn't use your quirk.

Bakugo: HAH!? A villain!?

Aizawa: Bakugo, quiet down. Now tell me, who are you?