Dororo chats with the girl Osushi while Hyakkimaru stands outside, experiencing the feeling of rain for the first time. Suddenly, Hyakkimaru detects a demon sword and rushes off. He encounters a man wielding the sword and only manages to defeat him by trapping the sword in his prosthetic leg. Dororo goes to retrieve the leg, but is pulled back to its owner when he touches the sword, Osushi's brother Tanosuke. Osushi takes her brother home but he is only interested in regaining the sword...