Rengoku leaves on a mission, believing an Upper Moon has been located. Murata visits Tanjiro, Inosuke, and Zenitsu. Tanjiro and Inosuke begin Rehabilitation Training while Zenitsu joins them two weeks later. It includes forcing them into stretches, testing reflexes against Kanao, and playing tag with her and Aoi. Zenitsu becomes furious when he learns that come back so ghastly even though they get to frolic with girls 24/7. While they win against Aoi, none can come close to defeating Kanao. After a while of regular losses, Zenitsu and Inosuke stop coming to training, not seeing the point as they can't win...