Help me, i'm looking for a karate movie!

by krimo
(NL amsterdam)

please help me!! I'm looking for a old movie about 2 fighters, 1 I remember was a like a samourai ninja who lived on a boot with his wife! Almost at the end of the movie they found out in a fight with each other that they where bothers!! They had the same bracelet! then they had a last fight together with the bad guy! Geat movie!!!!