Yumi became part of Yuuto’s family 5 years ago since her mother’s death. Since then, they have developed secret desire for each other. One day, Yuuto obtained a videotape of self-desires from a mysterious woman. From then, Ruri, Yumi’s classmate, was the first victim, then followed by Yumi and Kaori, Yuuto’s girlfriend. The content showed a different side of them during Meji period…