Reo is a gost hunter. One day, he was hunting an evil spirit in a remote village. When Reo was chasing the spirit, he realized that the spirit was carrying a little girl

"Ck, damn it."

While chasing the spirit, it turned out that on the way the spirit was trapped by a curse trap. When Reo stopped, the spirit disappeared like ash and the girl fell from the spirit's grasp. Reo, who realized it, reflexively caught the little girl, when he looked closely, it turned out that the girl was a demon king's child

"Daughter of a devil..."