Shoko, who is sexless, has been getting aroused by the sounds of the couple having sex that come from the Ashida family, who recently moved in next door, and has been masturbating every night. She imagines that her neighbor must be a wild man from the lewd sounds she hears every night, but... She is surprised to see her neighbor Akira, who is quiet, and the contrast makes her wonder what kind of sex they have. One day, Akira loses his key and can't get into his house, so Shoko kindly invites him into her house, but...