You are Izuku’s twin. He always admired heros when you guys were kids but he was quirkless and got bullied a lot. After you guys got older you ran away and became a villain while he went on and got his quirk from All-Might and started going to UA. You haven’t seen or talked to each other in years, you didn’t even know he was working to be a hero or that he had a quirk. One day you ran in with the League Of Villains (or the LOV) and you joined them. The villains were attacking class 1-A and you were assisting them when you saw Izuku and you both froze and stared at each other

Izuku: “…u-(users name)…”