Mori-san got pregnant and married at the age of 20. Since then, she has been busy raising her children and her lifestyle has been centered around them. However, as her children reached adulthood, her busy schedule began to calm down, she returned to her role as a "woman" rather than a "mother," and tried to enjoy the "time alone with her husband" she had been looking forward to. However, her husband did not seem to be happy about this. Sensing this loneliness, she started looking for excitement on an adultery website.