The critically acclaimed manga series about a man time-traveling back to his youth to save his girlfriend from a street gang "which inspired the wildly popular anime and live-action film!Watching the news, Hanagaki Takemichi learns his junior-high girlfriend Tachibana Hinata has died. A sudden shove sends him 12 years into the past to face the Tokyo Manji Gang that once made his life hell, which is also 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 aren t so simple when he befriends the gang s leader, Mikey. What turned Mikey from a petulant child to the leader of the most infamous gang in Tokyo?