Miyuki (Masuo)'s doting love for her son, Keita, is remarkable. Even now that he's grown, they still bathe together. One day, when Miyuki enters Keita's room, Keita, who is looking at a pornographic book, hurriedly hides. "I guess it can't be helped, since he's at that age," Miyuki says, but Keita pushes her down. He has feelings for Miyuki that go beyond those of a mother. Keita clumsily lets out his pent-up desires...