Hashiki Kono e, a 37-year-old married woman in her tenth year of marriage, supports a family of four with her salaryman husband and their two sons. She works as a manager in the women's clothing department of a prestigious department store—a position that may seem glamorous, but this year has brought tough sales targets and many arrogant customers, piling up work-related stress. Although her relationship with her husband is stable, the exhaustion from work has dampened her libido, leaving her sexually frustrated. She once had an affair with a male delivery worker, an experience that opened the door to seeking extramarital encounters—though opportunities have been scarce. With mostly female coworkers and older men around the workplace, chances are limited, which led her to take this step. Among her experiences, she recalls being taken from behind, passionately and intensely, as the most pleasurable she's ever had. Now, after about three months, she's engaging in such acts again—her uninhibited performance is a must-see.