House of Gamblers (1970)

Ken Takakura stars as Ryoji one of the Aramasa family's loyal lieutenants whao takes the burden of his family being insulted by the Tanuma's family goons, by retaliating on his own. After injuring the head of Tanuma's family, and slaying others along the way, he then surrenders to the law and serves time.
Before his last year to serve, the head of the Aramasa family falls ill and decides to retire, Ryoji miss chance to be successor, his old friend is reluctant but accepts. Now this gives the Tanuma family a chance for revenge! But with Tomisaburo Wakayama (Sekine) always having your back, how can you go wrong?