The heroine is the last demon hunter. Monsters appear frequently in the human world. Until a banquet, her silver bell rang. The source was the largest businessman in Kyoto. Later, she investigated step by step and uncovered the mystery.
That businessman is Cunning Man, a strange beast recorded in the Classic of Mountains and Seas that lives deep underground. He looks like a human, but his body is covered with boar bristles. Because of the rebellion, the female leader killed all of them. One of them accidentally escaped. The escaped one went overseas and established a mysterious organization (Hunter) to find suitable blood sources for him and mutate him. He must survive on blood all the year round and feed on human blood. He lives in the human world by changing his skin again and again to survive.
In the end, the heroine kills him, but who knows that there is another shocking conspiracy behind it.
Purpose: Fireworks in the world are livelihood, killing demons and eliminating evil is the original intention