Keiko, 27 years old... Five years after marrying her husband, she spends her days in a fixed cycle every day. At some point, the couple's activities became once a week, and once a month became half a year, and she began to forget her happiness as a woman. One day, Keiko becomes interested in a leaflet about a business trip massage in her mailbox. When she was given a special serum that had a rejuvenating effect, it turned out to be an aphrodisiac-infused oil. Without telling her husband, Keiko regularly goes to a 'medicated massage'.
