A film by Minami Kojima, she became secretly involved with her brother-in-law after he raped her. Minami has a fairly happy marriage with her husband. One day, her husband's younger brother came to live with them while looking for a job. Seeing his beautiful sister-in-law captivated him day and night, and he accidentally witnessed a scene of her having sex with his brother, which fueled his lust even more. Therefore, one day when his brother went out to work, he took a risk to see if he could have more fun :D...