27-year-old Keiko has been married for five years. Her days passed in a fixed routine, and her relationship with her husband gradually settled into sex once a week—eventually dwindling to once a month. Her desires as a woman slowly faded. Then one day, she noticed a flyer for an in-home massage service in her mailbox. Intrigued by the advertised "special anti-aging beauty serum," she decided to try it, setting herself on a new path. This serum, however, was actually an aphrodisiac-laced oil. As she received treatments with it, she began to rediscover excitement in her marriage. Secretly undergoing regular massages, she reclaimed her sense of self and reconnected with her husband.