Aki, who had been married to her older husband for six years, felt the absence of marital intimacy and grew increasingly lonely. One day, she learns that her husband's boss, Sagawa, is in the same situation with his wife. After her husband falls asleep, Aki and Sagawa drink together and talk about their circumstances, and Sagawa impulsively embraces Aki. Aki, who hadn't been held by a man in a long time, hesitates because he is not her husband, yet her body reacts. From then on, when her husband is absent, the two secretly engage in repeated sexual encounters.
