Heoju are a type of lowly spirits that are attracted to humans with strong spiritual powers, such as Lee So-Yoon.
Appearance[]
Heoju are typically the wispy shadows that follow So-Yoon around, playing various pranks around her. They can be dangerous to humans, as one attempted to push her down a flight of stairs as one of their pranks, but Chae-Rim saved her. If they combine, they turn into a more-dangerous humanoid spirit.
A group of typical Heoju tormenting So-Yoon.