Heizo's cousin Senemon Misawa and his son Katsuzo visited Heizo's home. Heizo learns that Senemon has fallen in love with Katsutoshi, a woman who works at the Yamabukiya Tea House, and has asked her to marry him. Heizo decided to visit Yamabukiya, saying "I will try to find out if this woman is a bodhisattva or a demon." After meeting Katsutoshi Heizo, felt embarrassed and ordered Gorozo to inquire about her just in case. Gorozo, in turn, sends secret detective Rihachi to Yamabukiya with the task of keeping an eye on Katsutoshi...