Mahjong: Hero x Demon King [DL Version]

Synopsis

Felzer, the master of Fieris Castle, is a being feared by humans as the Demon King. As a misanthrope, he spends his days destroying towns and plucking the few remaining hairs from his elderly retainer’s head on a whim. One day, while examining items randomly plundered from a human settlement, he discovers an unfamiliar tool. His retainer Galeaf explains it’s a human game called “Mahjong,” and Felzer immediately attempts to destroy it—but it’s no mere toy.

After a match, this cursed mahjong set bestows a bizarre curse: if the Demon King defeats his opponent and impregnates them with a finishing move, the offspring born are invariably peculiar magical creatures. Skeptical retainer Kalderez volunteers to test it, and a special child is born at once. Witnessing the curse’s power firsthand, Felzer decides to amuse himself with the set. However, his female demon subordinates seem reluctant—until he adds a condition: win at mahjong, and they must obey any command for one day.

The female demons immediately begin honing their mahjong skills. Word spreads, and even heroes join the fray for world peace. Thus begins the Mahjong Sengoku Era.