(TW: this story has consistent mentions of DID. I do not have the disorder but I did some research. if you find something that isn't right or something is missing please feel free to comment or tell me. I dont want to offend anyone. Mentions of alcoholism, abuse, harsh language, slurs, bullying and suicide baiting will will likely come up)
As a child, Izuku Midoriya did not have the happiest life. At school, he was harshly bullied by his peers for his apparent Quirklessness. At home, his alcoholic mother ignored his existence unless it was to beat him for being useless. Fleeting voices told his that none of this was right, but he took it all with a plastic smile. For years, Izuku endured this treatment until, one day, he broke.
Izuku wakes up in an alleyway with no memory of where he was or how he got there. Armed with only his wit, a backpack and the clothes on his back, he somehow manages to befriend the least likely of people and finds a new family at the same time.