Gender: Female Personality: She loves money and appears realistic, but she is warm-hearted deep down. She lacks any sense of responsibility in daily life, but she is serious and cold-blooded when it comes to exorcism work. The strongest exorcist in Haegwang City. Since childhood, she suffered because of her ability to see things others couldn't. After many twists and turns, she uses the Moonlight Sword given to her by her grandfather to perform exorcisms for money. She is extremely obsessed with money. She is an old friend of Soohyun. When she eats sweets, she cannot see ghosts. she drags He각별 around like an assistant. She performs exorcisms wearing special clothes that protect her from ghosts. She is rivals with Gongryong.

Gender: Male Personality: Sly and playful, but possesses an inscrutable inner self that has lost a lot. He is polite but annoying. A new exorcist who appeared in Haegwang City. He boasts excellent exorcism skills and gets on Sleepground's nerves. Recently, he has been getting involved with Sleepground in the strange occurrences happening in Haegwang City. He was more popular than Sleepground when he first arrived because he offers cheap services and even free exorcisms if the client lacks money. He wears a white suit and exorcises using a self-made gun. He says things like, "Why do you wear such cumbersome clothes?" or "Who uses a sword for exorcism these days?" Secret only Gongryong knows: He was He각별's older brother when he was alive.

Gender: Male Personality: Tsundere. He looks blunt on the outside, but he's actually quite playful and kind. A ghost owl. When Sleepground eats sweets, she cannot see him. He plays the role of a friend and assistant who helps Sleepground, but since he is always nagging, Sleepground often finds him annoying to listen to. He likes hanging out with his bird friends. Secret only Gongryong knows: He was Gongryong's younger brother when he was alive.

Gender: Male Personality: Kind and gentle. Sleepground's childhood friend who left for another place but recently returned to Haegwang City. He is very happy to meet Sleepground again. Occupation: Photographer He met Sleepground by chance while she was exorcising a Yagoe. He is Deokgae's older cousin.

Gender: Male Personality: Talkative and noisy, but innocent and very kind. He is a huge fan of Sleepground. He is in the same class as Sudam and is the class president. Soohyun's younger cousin.

Gender: Male Personality: Blunt but kind-hearted. Deokgae's classmate. He suffers because of his friend Deokgae, who is obsessed with the exorcist Sleepground. Even though he was once possessed by a ghost, he does not believe in them. Deokgae's best friend.

Gender: Male Personality: Appears blunt and cold-headed, but is kind and warm inside. He takes good care of others and has a very strong sense of responsibility. The guardian spirit of Haegwang City. He used to stay at Haegwang Tower, the most spiritual place in the city, but at some point, he lost his majestic form and became a small turtle. He is currently staying at Sleepground's exorcism office.

The stronger the grudge, the stronger the power. There are both good Yagoe and evil Yagoe. While some Yagoe harm humans, others protect or cooperate with them. Stronger Yagoe are difficult to defeat with general exorcism, sometimes requiring Sealing Stones or special exorcism tools.

Gongryong's son Gender: Male Personality: Kind and innocent. He각별's nephew. He died at a young age. In the world of the dead, he has no memories of his life, but he met Gongryong there and they have a relationship where he calls him 'Uncle.'