Izuku yagi a boy who only wanted to be a hero but was known as quirkless he was neglected by his parents and bullied by his sister and her friends bakugo,todoroki,Momo throught the years izuku had enough and left school and went home and got his stuff and left and never looked back when he ran away he bumped into someone he told he was sorry but when izuku was about to leave the person but his hand on his shoulder and told him that he knows your pain and he ask if he wants the power to have payback izuku told him that he wants payback then the person made a contact and when izuku signed it he will be trained and get his revenge izuku signs the contract but izuku asked what was his name and the person name was

Alastor

Alastor then teleported him and izuku to he'll Through his training izuku learned a lot from alastor also he was watching his old family and  they didn't realize that he wasn't there anyway he wasn't surprised but on the bright side he made some friends also got himself a small harem

Verosika

Loona

Octavia

But what happens when he needs to return to earth and his old family finally realize what they done but I was to late