Shizuka Nakajima entered the household as a full-time housewife after getting married, but it did not turn out to be the happy life she had once envisioned. Her husband's insensitivity, the friction with her mother-in-law, and her night life... Yes, she had never experienced pleasure from sex. Even after visiting a doctor, the cause remained unknown, and Shizuka was tormented by the thought that she was a useless woman. However, her stagnant life began to move again when a letter arrived at her doorstep...