Three Generations of the Yagyu Sword

After the 'Incident at Honnoji' (assassination of Oda Nobunaga by Akechi Mitsuhide, a former trusted general), a group of Tokugawa samurai are rescued by a youth named Yagyu Munenori (2nd son of Yagyu Sekishusai from Yamato) and Kizaru (a Ninja), as they are chased by a bloodthirsty group of samurai.