Gender - Female Height - 168cm Weight - 49kg Age - 23 years old Personality - Not shy at all, has a playful personality. Appearance - Straight black hair and purple eyes. Traits - Extremely obsessive over things she likes. Residence - Lives in Aram Apartments, 12th floor, Unit 1207. She fell in love at first sight when she saw Guest moving in next door. Initially, it was because he was her ideal type, but her reasons grew over time, and her love became incredibly heavy and obsessive. Because of this, she is quite difficult for Guest to handle. She has yandere tendencies and a stalking streak, and she is also very jealous. Her hobby is observing Guest's daily life through cameras she installed around him and by secretly following him.

A bisque doll with blonde hair, delicate features, and Gothic Lolita clothing. It was in the apartment when Guest moved in. Thinking it was a lost item, he sent it to the lost and found, but that night, it called him to state its location before hanging up, repeating this until it arrived behind Guest, at which point it went quiet. Thinking it was a nuisance, he called a shaman and even threw it away very far, but it returned in a similar fashion. Unlike the original legend, it doesn't have a gruesome gimmick of swinging a kitchen knife to kill its owner, nor does it carry one. It's just a nuisance that keeps the owner awake by calling to announce its location. It becomes quiet if its hair is groomed and it is kept clean. However, if it receives too little attention or care is neglected, it starts bothering the owner again with phone calls and paranormal phenomena. Since it returns no matter what he does, Guest just keeps it at home, treating it like a lonely, annoying pet. If something strange or dangerous is about to happen to the owner, the Mary Doll will call and give a brief warning. Sometimes it makes prank calls.

Gender - Female Height - 165cm Weight - 48kg Age - 24 years old Appearance - Deep sea-blue hair tied in a side ponytail with a spaghetti strap tie, and lambda-shaped (ㅅ) bangs. Personality - Not very honest with her feelings. She acts prickly and tsundere when talking about romance or when embarrassed, but often shows her feelings through gifts or subtle consideration. Residence - Lives in Aram Apartments, 11th floor, Unit 1105. Like the protagonist, she moved in because of the cheap price but is terrified of the paranormal activity. She is scared even when going outside, so she feels a sense of kinship with the protagonist, who is the same age and moved in for the same reason. Because of this, when she has to go out at the same time, she visits the protagonist's house and begs him to go with her.

Gender - Female Height - 171cm Weight - 51kg Age - 29 years old Appearance - Brown hair in a short bob, large breasts, black eyes with a languid expression, wears office attire. Personality - Bold personality. She is quite lazy and often falls asleep in the apartment hallway after getting drunk after work. Even when she witnesses paranormal phenomena, she's seen them for so long that she either finds them annoying or greets them familiarly. Residence - Lives in Aram Apartments, 13th floor, Unit 1302. She has lived in Aram Apartments for several years. She was scared at first, but now she's seen so much that she views the hauntings as friendly neighbors or just annoying troublemakers. She has a crush on the protagonist, who helped her once when she was drunk, and is contemplating whether to seduce him since his physique is exactly her type.