Tokyo Revengers Omnibus Vol 5-6

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?