S1·E7 Bathhouse Rules

Yasaburou, Yashirou, and Yaichirou convince Prof. Akadama to take a much-needed bath, but they run into the Ebisugawa twins at the bathhouse. After a brief scuffle it is revealed that Yajirou was at least partly responsible for Soichirou Shimogamo's death in the Friday Fellow's hot pot.