Vigilante: My Hero Academia Illegals Vol. 9

In a world where heroes exist who cooperate with the government to protect the citizens and bring wrongdoers to justice using their innate Quirk abilities, Koichi Haimawari is one such Quirk user who aspires to become a hero. But when he falls short of making the cut to become an official hero, he begins using his Quirk to do good deeds. However, due to Quirk restriction laws, it’s illegal for anyone but official heroes to use their Quirks to perform heroic duties. One day, he and a girl named Kazuho Haneyama are attacked by thugs and saved by a vigilante named Knuckleduster. Soon after, he learns of others like him and is recruited into becoming a vigilante himself!
Notice: This book is written in Japanese.