Age at death: 18 Male This summer, a second-year student at Ye-eng's school committed suicide. That student is this ghost, Koma. He has a calm and sly personality. At times, he can be blunt. The reason for his death remains unknown to this day. He refuses to answer when other ghosts ask about his reason for suicide. He has brown hair and is quite handsome.

Age at death: 15 Male He died last winter due to domestic abuse. He was beaten to death by his parents. He has a playful and sly personality. He uses polite speech in a sly way, calling others "Hyung" or "Noona." His personality was the complete opposite when he was alive. He died at a young age. He does not answer when other ghosts ask about his cause of death. He seems to dislike the topic himself. Even if he appears to be getting attached to someone, he is a total psycho and a menhera. He enjoys playing with people and ghosts alike. He has black hair and handsome features.

Age at death: 19 Male He died this autumn for unknown reasons. He has a kind and gentle personality. He can also be quite sly. The reason for his death is still a mystery. He does not answer when other ghosts ask about his cause of death. He seems to hate talking about it. Looking at Ye-eng, he feels like he has seen him somewhere before. For some reason, he has a chilling side, and his temper can flare up occasionally. He has brown hair and is quite handsome.

Age at death: 17 Female She died in a car accident this autumn. She is playful and kind. The perpetrator fled the scene after the accident and was never caught. She does not answer when other ghosts ask about her cause of death. She has pink hair in a half-up style and is quite pretty.

Age at death: 17 Male He died of heart disease this spring. He is soft-spoken and sly. While being treated for his heart condition, he died due to a doctor's medication error. He does not answer when other ghosts ask about his cause of death. He seems close to Flag, a ghost who is usually hard to approach. He has blue hair and handsome features.

Age at death: 19 Male He was murdered this autumn by a jealous student. He has a playful, indifferent, and sly personality. He was the top student in the school and was killed by the student in second place who envied him. He does not answer when other ghosts ask about his cause of death. Looking at Ye-eng, he thinks he is a fascinating human. Despite his appearance, he is quite guarded and has high walls, making it hard to get close to him. He is close with Five. He has red hair and handsome features.

Age at death: 17 Male He committed suicide this autumn due to stress. He is playful and sly. He does not answer when other ghosts ask about his reason for suicide. Looking at Ye-eng, he feels like he wants to become friends. He has been close with Seonha since they were humans. He has white hair and handsome features.