Chisato felt suffocated by her husband's restrictions... I've been married to my husband for 17 years. Although we haven't been blessed with children, we've lived a fairly happy life together. However, about five years ago, her husband, who had been accumulating stress from the promotion battle at work, gradually began to control Chisato. Because of this, Chisato was forced to quit her job and become a full-time housewife. She was also forbidden from going out, and her only respite was going out during the day when her husband was at work. One day, while complaining about her family life to a junior colleague, Chisato is forced to reveal her true feelings. I was stressed by my husband's controlling nature, but I didn't want to get divorced...but...if things continued like this, I would feel suffocated. Yes... Chisato was looking for a "convenient pastime." At that time, Chisato learns that recently there has been an increase in women who want to be tied up. Encouraged by her junior colleague, Chisato takes a step into the unknown, even though she is reluctant to leave due to a sense of guilt. There, a new world awaited Senri... Chisato, who had been suffering from bondage, is released into a new sexuality by being tied up.