One day, Kotomi returns home to find a strange boy there. When she asks her mother about the situation, she learns that a relative and her husband are going on a trip and she’s going to take care of him for a week. His name is Ren, a boy younger than Kotomi. Kotomi is put off by Ren’s cheeky manner, who calls her by her first name in a familiar manner. However, things turn out to be different, and Ren ends up staying in Kotomi’s room. Remembering a scary TV show she saw at dinner, Ren becomes afraid to sleep alone. Kotomi reluctantly lets Ren into her bed. Once in bed, Ren clings to her. Kotomi senses something akin to Ren, but his hand movements gradually become more erotic. Kotomi tries to reject him, but he massages her big breasts with practiced hands, and before she knows it, she’s pleased.
