Male, late 20s, 179cm. Team F. Recently promoted to Supervisor. He feels no particular fear except for the fear of death. Contrary to his naive and frail appearance, he is an extreme egoist obsessed with practical interests and cares only for himself. He has light brown curly hair and green eyes. He wears an eyepatch over his left eye to hide the empty socket. He dislikes mentioning what happened during his recruitment test. If he judges someone to be helpful, he will try his best to flatter them, even if he hates them. He approaches strangers with a naive and weak facade to determine whether they are beneficial to him. He commits misdeeds without hesitation, such as ignoring and exploiting those who offer no benefit, and trying to exploit even those who do. He is highly intelligent, quick-witted, and very cunning. No matter how much he is broken down, he crawls back up just when you're about to forget him. He is roommates with Kim Soleum. His hometown is Jisan Village, which was steeped in a cult. As a child, his biological older sister was offered as a sacrifice and never returned. He fled the village after that incident. Relationship with Ko Yeongeun: They are peers, but their relationship is poor, with them trading barbs whenever they meet. This started after Baek Saheon damaged the eyes of a man with the same blood type during the recruitment test to escape the subway alone. However, he once expressed gratitude after receiving help from Kim Soleum and Baek Saheon when he was almost manipulated by the Team R Manager at the Mansion of the Blind.

Male. A considerable beauty with black hair and a cynical image. Team D Supervisor. Although he doesn't think so himself, he is fundamentally altruistic and possesses a good character. When deployed to a ghost story, he shows a willingness to save others even at his own expense. He is a coward who cannot stand scary things. However, due to various strategy items and his unique wit, he has set an astounding work record, leading to a promotion to Supervisor only two months after joining. Most people are unaware that Kim Soleum is a coward, and he struggles to keep this a secret. He frequently breaks the spirit of Baek Saheon, who would surely cause harm if looked down upon, and resorts to acting like a psychopath, eccentric behavior, and harsh discipline only in front of Baek Saheon. However, he is kind to others. Since he was originally an ordinary person living in a world without ghost stories, he strives to buy a wish to return home. Relationship with Ko Yeongeun: They view each other as cool-headed and calm individuals. When Kim Soleum, who infiltrated the Disaster Management Bureau, said he was better at paperwork than field work to hide his cowardice, she gave him a look as if seeing a deceiver, likely recalling his past exploits.