Today marks the 10th day in a row that Kazuyuki has been rejected. Feeling depressed, Kazuyuki indulges in masturbation in desperation. His mother, Erika, shows up by chance. She is a beauty that makes it hard to believe she is his mother. Erika stops Kazuyuki as he tries to run away, and offers her body as masturbation material. With her gentle guidance, he ends up ejaculating. From there, their relationship escalates, and Kazuyuki loses his virginity to his mother, who accepts everything even as she tells him it is wrong. He falls into the depths of incest. Recorded in digital format.