Chaoyang lives with her gentle husband, Koichi, and her father-in-law, Haruo. - His father-in-law, Haruo, was kind to Chaoyang and said he wanted to see his grandson early. - However, Haruo, who learned that the couples activities with Koichi were pale and the morning sun was not satisfied, attacked Chaoyang who had forgotten Koichi to go to work one morning. - And then, every day, when he is alone, Haruo repeats obscene acts. - As these days are repeated, Chaoyang awakens to the pleasure that Koichi couldnt get.