Shizuka Nakajima became a full-time housewife after getting married, but it didn't turn out to be as happy as she had imagined. Her husband was insensitive, there was friction with her mother-in-law, and her sex life... Yes, she had never experienced any pleasure from sex. Even after going to the doctor, the cause was not found, and Shizuka became worried, thinking, "I'm a useless woman." Then, she received a letter that started her life moving again...