Watching the news, Hanagaki Takemichi learns his junior-high girlfriend Tachibana Hinata has died. A sudden shove sends him twelve years into the past to face the Tokyo Manji Gang that once made his life hell--the same gang that's responsible for Hinata’s death in the present. To save Hinata and change the future, Takemichi must rise to the top of Kanto’s most sinister delinquent gang! But things get complicated when he befriends the gang’s leader, Mikey. What turned Mikey from a petulant child into the leader of the most infamous gang in Tokyo?