The Secret Sword, Hiken (1963) dir. Hiroshi Inagaki

Set in the 17th century when all forms of swordplay were banned, Hiken (Young Swordsman) stars Shogoro Ichikawa as Tenzen a young swordsman who believes the ban is unfair. By contrast, his brother Chojuro (Hiroyuki Nagato) is a conformist, and keeps his opinions about the law to himself. When Tenzen becomes possessed by his own evil sword style and is later banished, it falls to Chojuro to restore the family s lost honor, and to challenge Tenzen to a deathduelz