With the apartment lacking a bathtub, Tsukasa and Nasa head out to a bathhouse after having breakfast. Nasa introduces Tsukasa to Kaname Arisugawa, Nasa's former underclassman who runs the bathhouse along with her older sister Aya. After Kaname enters the men’s side, she asks Nasa about his relationship and expresses her disapproval, while demanding him to make Tsukasa happy. Over on the women's side, Tsukasa meets Aya, who attempts to provide good customer service, by scrubbing Tsukasa’s back...