Akihiro and Yuzuki have been a married couple for some time and live happily together. But there has recently been a big problem: lately, Akihiro has been working far too much and, therefore, only comes home late, which is why he can’t spend much time with his wife, and their sex life falls by the wayside. Yuzuki longs for love and physical closeness. Feeling neglected, frustrated and unsatisfied, she has no choice but to help herself in other ways: she cheats on her husband.