Takemichi Hanagaki explained.

Takemichi Hanagaki is the protagonist of the manga and anime series "Tokyo Revengers." He is a 26-year-old man who works part-time jobs and has no real ambitions in life. However, he is transported back in time to his high school days, where he decides to make a change and prevent the death of his former girlfriend, Hinata Tachibana.

Takemichi is determined to become a delinquent and join the gang that killed Hinata, the Tokyo Manji Gang. He wants to infiltrate the organization and gain their trust to find out who is behind Hinata's murder. Despite being initially weak and unskilled in fighting, Takemichi gradually improves his physical and mental abilities through training and facing his fears.

Throughout the story, Takemichi forms friendships with members of the Tokyo Manji Gang and develops a sense of loyalty towards them. He also struggles with the consequences of his time-traveling, as his actions in the past often result in unexpected changes in the present.

Overall, Takemichi is a relatable and empathetic character who is willing to put himself in harm's way to protect those he cares about.