Hikaru, a wife who lives in harmony with her husband and his parents. His mother-in-law said, "I want to see my grandson's face," but in fact Hikaru was worried that he could not be positive about sex. When Hikaru consults with his father-in-law, he is jealous of him saying, 'You still don't know about sexual apology.' For her husband and for her mother-in-law, Hikaru decided to accept her father-in-law's "Tsuko Chokkyo."