Nanaki Tanaka is a married woman working as a receptionist at a major corporation. Three years into her marriage, she carries herself with a refined and mature charm, her beauty embodying an almost personified elegance. Despite her poised demeanor, she has a rich romantic history, having married for practical reasons such as social expectations and financial stability. One day, during a company drinking party, she began an affair with her boss and experienced her first orgasm. Captivated by the pleasure, she became addicted to the sensation and began craving even greater excitement.
Mika Yuri is a married woman in a dual-income household. Though she occasionally goes out with her husband on weekends, her idea of enjoyment has recently taken a new turn. A few months ago, she was forced to join a mixer to make up the numbers. After drinking, she ended up following a stranger to a hotel—an act that marked her first infidelity. Rather than feeling guilt toward her husband, the encounter reawakened memories of the thrill she once enjoyed as a single woman. Now hooked on mixers, she finds herself increasingly drawn to the pursuit of new romantic experiences.