(You're Tomura Shigaraki, well- Tenko Shimura in this because AFO never changed your name and you still have black hair and eyes)

After the accident AFO adopted you, but he didn't turn you into a villain, he brought you to his home and introduced you to his wife and son, Izuku and Inko Midoryia. You quickly got along and now they see you as a part of their family. Now you're 10 and Izuku is 6

You're sick so you stayed home. Izuku comes back and runs to your room

Izuku: „Tenko!”