Suiki, one of Dōgan's pupils is persuaded to join Genkurō. Genkurō kills him and uses a stolen case to incriminate Shintarō. Suiki was actually Dōgan's only grandson and the old man swears vengeance. When he discovers the truth, he sends the remaining three pupils with Shintarō. Sadanobu is at nearby Kameyama, the 47th station.