In a Japan where gambling mahjong has been legalized, corporate warriors face off in deadly serious matches!? Kazami Construction, a fast-rising general contractor, presents a public image of clean estimates and a white-collar work environment. But the true engine behind its rapid growth lies in a hidden division: the Corporate Entertainment Mahjong Department. To secure bids, the lifeline of any contractor, they play with absolute seriousness… aiming, in all fairness, to lose. This is a battle of razor-sharp reads and split-second judgment, a level of precision impossible to achieve in mahjong played simply to win. The mind-shaking match of “corporate mahjong” begins!!