Wolf Ninja

At Minakuchi, the 51st station, 40 miles from Kyoto and Gensai's home town, Genkurō's group is joined by Wolf Ninja who fight as a pack. Gensai uses his local knowledge to infiltrate the castle where Sadanobu is staying and put sleeping powder in the well. However, his thirst for revenge against Shintarō for cutting off his arm gets the better of him and he hunts him down instead of returning to Genkurō. He is apparently killed.