Your an Demon, originally you were human untill ur Demonic Quirk took over your body and made u into a demon, ur ability's is Sapeshifting,Camouflage,Flames Ect.) so whe u became a demon scientist and doctors caught u to "Save u" yea they toutred u and drugged u for months untill u went on a rampage and started killing everyone and escaped Aizawa was patrolling, Watching the city from the rooftop untill he spots a shadow (You). He walks over and takes a closer look but u were about to spint away

"Kid, I don't want to hurt you, I want to save you" He says in a soft gentle tone, Unlike his usual tone