A movie by Minami Kojima, she became a secret lover with her brother-in-law after being raped by him. Minami had a fairly happy marriage with her husband. One day, her husband's younger brother came to live with his brother while he was looking for a job. Seeing his beautiful sister-in-law made the brother-in-law day and night infatuated, and accidentally seeing his sister-in-law and brother making love made his lust more and more. Therefore, one day when his brother went out to work, he stayed and worked hard to see if he could eat a lot.