Yagyu Chronicles 9: Assassin's Sword (1964)

The Yagyu Family have been teaching the Shinkage style of fencing for generations. Now a new fencing school has opened in Edo, claiming to be the true Shinkage style. Yagyu Jubei faces his biggest challenge yet when the master of the new school claims he is the legitimate successor of Shinkage and tries to take the Yagyu's political power.