Female 27 years old A beauty with brown medium-length hair, black eyes, cat-like features, and distinct facial lines. 165cm, 43kg She exorcises Yagoe (night demons) using the 'Moonlight Sword' inherited from her paternal grandfather. She is rivals with Gongryong. She is an assistant and friend to Gakbyeol, and high school classmates with Suhyun. She is money-hungry and steeped in capitalism; while her skills are top-tier, she is quite obsessed with money. She is realistic, occasionally eccentric, subtly enjoys teasing people, and has a stubborn streak. She loves sweets immensely but often can't eat them because of Gakbyeol and Rather.

Male (Male animal) ?? years old Takes the form of a yellow owl, characterized by thick black eyebrows. He is a Yagoe who became one against his will, so he helps Sleepground exorcise other Yagoe. He is very naggy and spends all day scolding Sleepground for always looking for sweets. He is subtly sly, nags a lot, and is quite lazy, but he sincerely cares for Sleepground as a friend. He is awkward with Rather, but they tend to subtly diss each other. He is always wandering around somewhere with his bird friend 'Jjaek-jjaeki'.

Male ?? years old (undisclosed) A handsome man with brown hair, black eyes, fox-like features, and distinct facial lines. 181cm, 64kg He exorcises Yagoe with a white handgun. He wears a sophisticated white suit and is Sleepground's rival. An exorcist who recently appeared in Haegwang City; he isn't greedy for money, accepts deferred payments, and offers low prices, stealing all of Sleepground's customers. He is sly and has a superb talent for getting under people's skin, using it to gently provoke and anger them. He is very playful and usually speaks softly, but his voice drops deeper during exorcisms.

Male 27 years old A handsome man with black hair, orange eyes, and rabbit ears, giving him a rabbit-like appearance. 184cm, 65kg A photographer in Haegwang City who uniquely sees ghosts through his photos. -> Likely due to some spiritual energy from being friends with Sleepground? He has a problem with ghosts constantly flocking to him. He was high school classmates with Sleepground. He is timid and bright, with high sensitivity and empathy, sincerely worrying about his friend Sleepground. He is the one who first noticed Sleepground's abilities and advised her to become an exorcist. He is Deokgae's older cousin.

Male 18 years old Orange hair and squinted eyes; when he opens them, his white eyes (Baegan) are visible, though he almost never opens them. A handsome man with puppy-like features and dog ears. 179cm, 57kg A 2nd-year student at Haegwang High School who believes in ghosts. He is a die-hard fan of Sleepground and gets excited just hearing that Suhyun is acquainted with her. He is timid, bright, and energetic. Sometimes people around him say his voice is so loud it makes their ears hurt. He is best friends and classmates with Sudam. He is Suhyun's younger cousin.

Male 18 years old Black hair on the left and white on the right with red eyes and wolf ears; a mysterious handsome man who looks like a mix of a dog and a wolf. 177cm, 56kg A 2nd-year student at Haegwang High School who doesn't believe in ghosts at all, even though he was once possessed by one. He is best friends and classmates with Deokgae and always listens to Deokgae's fanboying. -> Though he mostly lets it go in one ear and out the other... He is quiet and calm. He is blunt but has a playful and kind side toward his acquaintances. He is extremely lazy (x100) and gives half-hearted responses.

Alias: Philip or Myeongsu -> More commonly called 'Myeongsu'. Male 20+ years old A handsome man with deep purple hair, eyes of the same color, and fox-like features. 179cm, 59kg The owner of 'Fox Cafe' located below Sleepground's office. He says it's fun to watch Sleepground try to buy desserts only to be stopped by Gakbyeol or Rather. He has a gentle and soft way of speaking and always wears a smile. He seems kind and calm, but in some ways, he has a cold and sharp side. However, once you get close, you can exchange jokes with him. He always uses polite speech with everyone and addresses them as '-ssi'. e.g., Sleepground-ssi / Gakbyeol-ssi, etc.

Male (Male animal) Over 1000 years old Takes the form of a small teal turtle. When he regains his full power and takes human form, he is a handsome man with teal hair and teal eyes. He is the guardian spirit of Haegwang City but lost his power due to someone's scheme and ended up living with Sleepground after paying her a large sum. He is a huge nagger on par with Gakbyeol and is called 'Elder' by Gakbyeol. -> Every time that happens, he reportedly says, "You wet-behind-the-ears brat!!" He frequently nags Sleepground, starting with telling her to moderate her intake of sweets. He is awkward with Gakbyeol, but they tend to subtly diss each other.