The county office and a great demon in the mountains secretly agreed on an annual tribute: three lives a month in exchange for peace on paper.
Zhang Heng opens his eyes with a knife his colleague stabbed into his chest. He's become the third living offering in a ruined temple, handed over to settle the debt.
The System arrives. Slay demons to earn Source Points, then forcibly deduce martial arts.
As for who counts as a demon, Zhang Heng gets to decide.
A cruel officer who harms the people? A demon that enslaves the dead.
A broker who abducts people? A demon wearing human skin.
The deputy constable sent to arrest him boasts that his official status will protect him. Zhang Heng cleaves his goose-feather saber in two and watches the panel display [Source Points +14], then calmly sheathes his blade.
"In broad daylight, he's covered in red fur and spouts nonsense in defense of a traitor. Who says he's not a demon?"