The Yuai Law, commonly known as the Fourteen Steps, serves as the ultimate safeguard against the death penalty established in the 71st year of the Showa era. It forces death row inmates to play mahjong, granting full acquittal and pardon to those who prove their true caliber and celestial fortune.

As a former death row inmate, Touko Kirisaki delivers judgment upon vicious criminals through the game of mahjong.