Nuinosuke and his sister, Ritsu, the children of a man ordered to kill himself in Owari, want revenge and attack the Retired Lord and his train. Shintarō and Tonbei rescue the pair. They find themselves in agreement with Shintarō that the Retired Lord has to go to save the Owari clan. Tonbei has his doubts about the siblings and suspects Hakuunsai sent them to confuse them but Shintarō has faith in them. While at the inn, Shinshūya, Shintarō and Shūsaku are attacked by a pair of Black Ninja and Ritsu’s brother is also wounded. Tonbei and Ritsu go to Owari to gather like minded people but Ritsu reveals herself to be a Black Ninja named Kazeba and attacks Tonbei. Meantime Shintarō, Shūsaku and Nuinosuke follow the Retired Lord until Nuinosuke reveals himself to be a Black Ninja known as Flying Eagle and attacks Shintarō in a temple. They fight and Flying Eagle is killed. Kazeba swears revenge on her brother’s killer.
