Is This Imperial Secret Police Officer an Undead Calamity?

Three kingdoms stand in opposition, sects abound, demons and monsters run rampant, and the people live in misery. Lin Wei transmigrates to another world and becomes a young attendant who studies alongside a noble’s son. With the household’s strict rules making it difficult to investigate the awakened Necromancer System, Lin Wei finds a way to become a constable. But under the pressure of all kinds of threats to his survival, he has no choice but to tread carefully and advance one step at a time. Only when he is left with no other choice and unleashes his full power to crush his enemies does Lin Wei realize that, without even noticing, he has brought this continent the awe-inspiring terror of a unique undead scourge!