Inko finds out that y/n is her daughter and that her quirk and that it gets out of control than what it's true meaning is. Mirio loses his quirk and becomes depressed and finds out that ERI can't help him and that there is.no use to being a hero. But to be a villain.
Y/n had been taken away from her mother from her father. As her mother begged him. As she grew up she became top fourth in UA, As she befriends Mirio he falls for her. As she suffers from bullying and torture. Especially a mysterious evil swirling up above.
Thete is no Eri and you have her quirk but you can control it well. You are Tamaki's brother.