Game: Between the Suits Vol. 3 (manga)

Sayo and Ryoichi's sexy "game" continues, balancing their professional work life with their sizzling nightlife. Meanwhile, a colleague in the office is raving about the extramarital affairs in a late-night soap opera, and insists Sayo check it out. Sayo isn't interested, but Ryoichi's shared distaste for it surprises her.

Why is a playboy like him bothered by the topic of infidelity? And then there's something different about him in bed that night...