Bad Cat

Nightingale and William are cat demons who roam the human world, engaging in soul transactions with mortals. They absorb the souls of those they trade with, using the spiritual energy to enhance their cultivation and pursue immortality.

As they carry out their deals, the two demons cross paths with a colorful cast of characters, including Red Feather and Blue Ling. Each encounter brings unexpected events and challenges, forcing Nightingale and William to navigate the blurred line between their demonic nature and the human emotions they begin to experience.