Keiichi Ishikawa

A motorcycle daredevil is murdered by a gang that wants to take over the circus to become the cover for their drug operation, but his replacement (Akira Kobayashi) has other ideas.

Kiroku boards with a Roman Catholic family and falls for the daughter Michiko. He ignores his feelings, joins a gang, gets in fights and, eventually, becomes involved with the radical Kita Ikki group.

Film from 1967.