Based on

Movies like Melody of Rebellion (1970)

The disbandment of the Tanno clan left gang member Tetsu to stray from the crime family's fold. He roamed the streets as a one man band, wearing a denim jacket and long hair with sunglasses to cover his piercing eyes. Befriending a like-minded lone wolf by the name of Gebasaku, Tetsu builds a coalition against higher forces. A graphic portrayal of irrepressible anger and a friendship worth dying for.