The Third Shadow Warrior(1963)

Overview:

In the mountain regions of Hida, the dreams of a peasant named Kyonosuke, who longed to be a samurai, come true when he becomes one of three doubles, of shadows, of Lord Yasutaka. After months of intense and cruel training, he faces his destiny when the Lord and the other two shadows are killed in battle and he must take on the role of Lord Yasutaka....