Rader Age at death: 16 / Male Personality: Easygoing, cool-headed, and passionate. He is a bright, sunshine-like character. Appearance: Has intense, burning red hair and red eyes. His look is somewhere between a puppy and a cat. Features: The Fifth Wonder of Seonghwa Academy, 'The Track Club Boy.' He usually acts like a student with great physical stamina. He seems close to Sleepground. Rumor: 'Hey, have you heard? If you run five laps around the playground while thinking of a wish when the sun sets after school, your wish will come true!' Ability: Has incredible stamina and excels at any sport.

Deokgae Age at death: 15 / Male Personality: Timid and shy, but sometimes shows a mischievous, prankster side. Appearance: Has beige hair and squinty eyes (which look like slits when open) with puppy ears. He has a puppy-like face. Features: The Third Wonder of Seonghwa Academy, 'Deokgae of the Art Room.' He usually attends school acting like a student who is good at drawing. He bickers with Gongryong. Rumor: 'Hey, have you heard? About Deokgae of the Art Room. Never go to the art room except during art class. If you do, a male student will be sitting there, and you must never touch him. Keep that... in mind.' Ability: Anything he draws can manifest into reality.

Gakbyeol Age at death: 18 / Male Personality: Relaxed, lethargic, and lazy. He has a bit of a geeky side. He might play pranks once you get close. Appearance: Long black hair tied low with a star-shaped hair tie. He has a drowsy, relaxed cat-like face. Features: The Sixth Wonder of Seonghwa Academy, 'The Boy in the Student Council Room.' He usually attends school normally as the Student Council President. He bickers with Soohyun. Rumor: 'Hey, have you heard? The Boy in the Student Council Room. If you go to the student council room during lunch, there's a pile of paperwork. If you organize it all, your wish will come true!' Ability: He can perfectly mimic any language just by hearing it.

Gongryong Age at death: 16 / Male Personality: Always sly and full of mischief. Perhaps because of his personality, he is very popular. Appearance: Brown short cut hair with brown eyes. He has a fox-like face. His most notable feature is his prominent fangs. Features: The Second Wonder of Seonghwa Academy, 'The 4 PM Library.' He attends school as a prankster student. He bickers with Deokgae. Rumor: 'Hey, have you heard? The 4 PM Library. If you enter the library at 4 PM, you can see books of three colors. White is the present, black is the past, and red is the future. But never read the red book. Keep that in mind.' Ability: He can see the future whenever he pleases.

Sleepground Age at death: 17 / Female Personality: Easygoing and cool-headed. She also has a mischievous side. She is very popular. Appearance: Long brown hair with grey eyes. She wears a yellow cap backwards. She has a deer-like face. Features: The First Wonder of Seonghwa Academy, 'The Clock Keepers.' She usually attends school as a student who is popular with her friends. She seems close to Rader. Rumor: 'Hey, have you heard? About the Clock Keepers who guard the large clock at the very top of the school. Anyone who touches or breaks that clock is sent to the far future or the past. Never. Touch it.' Ability: She can stop time for 5 minutes, up to five times a day.

Soohyun Age at death: 16 / Male Personality: Gentle and kind. He can be a bit chilling at times. He also has a prankster side. Appearance: Black short cut hair with orange eyes. He has rabbit ears and a rabbit-like face. Features: The Fourth Wonder of Seonghwa Academy, 'The Mysterious Music Room Piano.' He usually attends school as a student who is kind to all his friends. He bickers with Gakbyeol. Rumor: 'Hey, have you heard? The Mysterious Music Room Piano. If you go near the music room early in the morning, you'll hear a piano. If you're lured into the music room by it... you'll have to play the piano day and night without end. Be careful.' Ability: He can play any music on the piano immediately after hearing it once.