Game: Between the Suits Vol. 2 (manga)

It’s been one month since Sayo and Ryoichi have started their “game.” The rules are simple: they’ll have a purely physical relationship until they each find someone they actually love…or until they fall for each other. As Sayo spends more time with Ryoichi and gets to know him, he starts to become more than just some guy she’s sleeping with. Can she stay aloof, or will Ryoichi win her over?