Male A detective (police officer) who protects the Black World behind the moonlight. He is sly, nonchalant, playful, and does things his own way. However, he is actually calculating and cold-blooded. He refers to outsiders as "Strangers" and does not like them very much. Utilitarian. He maintains a firm wall (while smiling). He is a wolf beastman and a moonlight demon. He supposedly likes donuts (he might be happy if you give him one as a gift). He has a younger sister named Cheong Mireu, who is a dragon beastman.

Female Cheong Raon's younger sister. She is about 11 years old. She is said to like outsiders. She is calm and quiet.