Yuina is married to an older novelist husband. I was satisfied with the life of three parents and children with my husband's stepchild Takashi in a splendid mansion. However, the night life with her husband, who had age and work stress, was dull. One day, Yuna, who suddenly touched Takashi's strong and grown body and felt a man, felt something hot in his own body and indulged in masturbation. That figure is seen by Takashi... An immoral incest drama written by a monologue of a married woman who wants to be a woman forever!