Demons and monsters run rampant, and human lives are worth less than grass.
Gu Chang'an was nothing more than a corpse-handling laborer at the Demon-Slaying Office in Qingshi County. He lived in the coldest courtyard, carried the filthiest corpses, ate scraps, and did the kind of work most likely to get him killed. Then, on a rainy night, he found a sliver of fortune that no ordinary mortal should have possessed on the body of a demon wolf.
From then on, slaying demons granted him stolen years of life, while vanquishing evil nourished his own body.
But he soon discovered that demons weren't necessarily the most terrifying things in the world. The county's powerful families, the yamen's runners, the evil spirits worshipped in secret, and even those who wore human skin and sat in lofty positions were all using demons to prey on people and exploiting the chaos to steal lives.
If this world offered him no way to survive, then he would carve one out with his blade.
From tempering his skin and flesh to forging sinew and bone until they rang as one; from a corpse collector on a rainy night in a small county to a demon slayer whose blood-red aura made every monster turn pale.
First he would slay the evils of the mortal world, then call the gods and immortals of heaven to account.