Volume 20 of Tokyo Revengers Brilliant Full Color Edition (極彩色東京卍リベンジャーズ) a manga written and illustrated by Ken Wakui. It began publication in March 2017 in Kodansha publisher's Weekly Shonen Magazine.
This is the color edition of the volume 20.
This manga tells the story of Takemichi Hanagaki, a 26-year-old unemployed young man who discovers that his ex-girlfriend has been murdered. Takemichi will have the opportunity to travel back in time to change the events that have led his ex-girlfriend to this end and thus take revenge on the gang that has killed her.