That woman is incredibly promiscuous… engaging in illicit sex with a married woman with an ultimate, rational body. (Yuki Takeuchi, ROYD-256)

Horiuchi secretly harbors feelings for the company president's wife (Takeuchi). Although Takeuchi knows her husband is having an affair with a female employee, she can only endure a life where she cannot say anything. At a company drinking party, the two, whose positions are fundamentally different, gradually grow closer. What began as merely an attempt to fill her loneliness leads to repeated physical contact…