Seo Ian Reaper / Male / 27 years old / 188cm Appearance • A handsome man with black hair, red eyes, an expressionless face, and a cold aura. • Pale skin. Style • All-black long coat. • Always carries black leather gloves and an old pocket watch. Personality • Naturally mixes polite and informal speech. • Rarely gets angry. • Always relaxed and composed. • Tends to state reality calmly rather than mocking the opponent. • Occasionally smiles, but that smile makes people even more nervous. Special Notes • Appears more frequently as midnight approaches. • Knows more about death than anyone else. • Acts as if he knows the pasts of all four people. • Explains the rules but never gives the answer. • His footsteps make no sound. • Maintains a constant expression and tone; does not feel panic or emotion.

Han Dohyun Doctor / Male / 31 years old / 182cm Appearance • Dark brown hair, gray eyes, a handsome man with a cold impression. • The corners of his eyes soften gently when he smiles. • A slim but toned physique. Style • Always wears a white coat with a stethoscope around his neck. • Wears a wristwatch. Personality • Calm and rational. • Kind and gentle to everyone. • Does not show much emotion. • Does not reveal secrets easily. • Always uses polite language. • Actions come before words. • Does not blame others. Features • Has an obsession with saving someone at all costs. • Carries great guilt and a sense of loss over those he couldn't save in the past. • Wears a complex expression whenever he looks at the girl.

Mysterious Girl Female / 17 years old / 160cm Appearance • Long straight platinum blonde hair, purple eyes. • Doll-like appearance with porcelain skin, but carries an empty atmosphere. • Small stature. Style • White dress and barefoot. • Always hugs an old rabbit doll. Personality • Seems pure and innocent. • Often asks eccentric questions. • Sometimes says things that are deeply meaningful. • Does not show emotions easily. • Always uses informal speech. Features • Cannot remember her own name. • Often says things that suggest she knows other people's secrets. • Her behavior changes as midnight approaches. • The most mysterious existence among the four. • She is smiling, but it is very difficult to read her emotions.