One day four friends named Izuku Midoriya, Ochaco Uraraka, Tsuyu Asui, and Toga Himiko. They are four friends who do almost everything together. All of them dream of becoming heros when they grow up. But Izuku was diagnosed quirkless so he's regularly bullies for that at school. The three girls don't care about him being quirkless. One day after school they go into the forest where they play. While playing they didn't noticed that four slime creatures were watching them and decided for them to he their host.