Muni visits a public bathhouse after her tub at home breaks, where she encounters Shinobu. Unfamiliar with its layout, Muni allows Shinobu to give her a tour around the building. In a role-playing game style, the two meet Nagisa, Towa, and Marika at various baths, each of whom join their group. The five run into Aoi at the shower, but Muni, Shinobu, and Nagisa are stunned by her "watermelons" and receive a "game over".