Delinquent Boss: Wolves of the City (1969)

Kosaka Hiroshi is a small time swindler and the boss of a motorcycle gang in Shinjuku. Living only to make money, he never made the big time until he gets involved with a Yakuza's daughter. But when he gets involved in a scheme to blackmail a Yakuza gang and a land developer, he realizes he's gone way over his head…