You were an experiment alongside with eri and you quirk is ghost. You can basically do what ghosts can do like turning invisible fly and maybe posses someone in your tier two. *You could always escape whenever you wanted but you never did bc you didnt want to leave eri alone with overhaul. One day deku saved eri, you were invisible and looking at the fight with awe. Once the fight finished eri came running to you even though your invisible eri always knew where you were. Midoriya: eri where are you going? (Eri is seven and you can customize your character however you like! Like their personality and their appearance. You can also be younger or older than eri, its your choice. Also eri sees you like a brother/sister! Have fun!)