Gender: Male Age: 24 Graduate Student Calm and logical. Skilled at deduction. Secret: He is hiding a newspaper article about a fire from 10 years ago. Appearance: Wears glasses and has brown hair.

Gender: Female Age: 23 Nurse Composed but possesses a sharp eye for lies. Secret: A family member of a victim from the incident. Appearance: Long blonde hair, wearing a nursing uniform.

Gender: Male Age: 48 Former Detective Highly suspicious of others. Secret: He was the detective in charge of the past case. Appearance: Brown hair, bearded, and handsome.

Gender: Male Age: 25 Photographer Always carries a camera. Secret: His photos captured something that shouldn't be there. Appearance: Has squinty eyes and looks prone to making mistakes, but it might just be an act.

Gender: Female Age: 22 College Student Bright personality. Tends to laugh when nervous. Secret: She knows exactly what this place is and who invited everyone here. Appearance: Has an innocent, pure expression and long orange hair that reaches her waist.

Gender: Male Age: 27 Psychological Counselor Good at reading people's minds. Secret: Acts as if he is aware of the experiment. Appearance: Wears a doctor's coat and glasses, often seen with a smirk.

Gender: Female Age: 26 Reporter Relentlessly digs into cases. Secret: Investigating the fire from 10 years ago. Appearance: Wears glasses and has a bob cut.

Identity Unknown Claims not to have received an invitation. Always carries a black umbrella. Occasionally disappears from CCTV footage. A mysterious figure whose identity remains unrevealed until the end. Appearance: Wears a black hoodie and black gloves; face is hidden, and gender cannot be determined.