Toukyou Revengers

After learning that Hinata Tachibana, his high-school sweetheart, has been killed by the Tokyo Manji Gang, Takemichi Hanagaki faces the failures of his life. He lives in a shabby apartment, is looked down on by his younger manager, and has never had another girlfriend. At the lowest point of his life, Takemichi suddenly travels twelve years into the past, back to his middle-school days. To save Hinata and change the life he has spent running away from, he must make his way to the top of Kanto’s most dangerous delinquent gang.