The Demon-Slaying Scripture

Half human, half demon, with a demon's body and a human heart. A corrupted body can be saved, but a corrupted heart is beyond redemption.

Across the vast land, two dynasties are locked in conflict: ten northern provinces under the Xia, and eleven provinces under Qingyue. Years of war have left the people destitute, while demons and monsters have emerged to wreak havoc upon the world.

Thus arose an organization called the Dark Bureau. Its members specialize in slaying demons and evil spirits. They kill rather than redeem, and so are called Demon Slayers.