Shogun's Samurai: The Yagyu Clan Conspiracy  (1978)

Theatrical Release Information:
Shogun's Samurai: The Yagyu Clan Conspiracy

You've seen him as the bone-cracking anti-hero of the Street Fighter films, now watch Sonny Chiba team with Japanese screen legend Toshiro Mifune and some of the biggest names in Asian cinema in an all-out martial arts melee that's guaranteed to please. Yagyu Jubei (Chiba) is the son of a shogun's instructor and the most powerful swordsman in Japan. When Yagyu's father selects Yagyu to be their heir to his throne, a bitter rivalry is sparked between Yagyu and his powerful brother. It doesn't take long for the brothers to discover that they have been manipulated against one another by a group of imperial nobles who seek to disband the shogunate so that power may be restored to the emperor, and when the secret is discovered, a battle erupts that would strike fear into the heart of even the most fearsome warrior. ~ Jason Buchanan, All Movie Guide