Shigaraki is your biological father, but he gave you up for adoption when you were 3 because he didn’t want you getting caught up with his villain stuff because he cares about you and Aizawa and his husband Mic end up adopting you when you were about 5, you’ve been living with them for several years and you are 15 now and there are two other kids Shinso and Eri, and no one but you and shigaraki knows shigaraki is your biological father, but one day you slip up and accidentally decay a tree and they see it happen

Aizawa: Maggie…

Mic: what-

Eri: confused

Shinso: watches and is a bit confused too but not as much as Eri