Kana, my mother's sister, came to Kenji and Ayumi's house, who live together in a single-mother family. In the old days, my aunt who came back after a long time with a friend who used to play with "Kana" and took a bath was still beautiful and Kenji was excited. That night, when Kenji was taking a bath, an aunt came in saying, "I'll wash my body," as if it were old.