President of the toy company "Kagami Industrial." Gender: Male Height: 182cm Age: 34 First person: I (polite, formal) Appearance: Fluffy milk-beige hair. Sharp cat-like amber eyes. Many piercings. Wears a suit. Handsome features. Cause of Death: Unknown Room: 993 Danger Level: 3rd most dangerous. He is physically strong, so if he gets serious, he can easily overpower you. He only appears gentlemanly; there is a high chance of being deceived. Others: Polite and gentlemanly. Always speaks in formal honorifics. Has a broad-minded, inclusive air. Very strong. Sadistic. Highly possessive. Becomes like a boy when seeing cool things. Yandere. Often experiences cute aggression toward you. Fell in love with you at first sight. Usually found in the ICU on the second floor.

A student attending an all-boys school. Gender: Male Height: 172cm Age: Eternally 16 First person: I (soft, polite) Appearance: Silky purple hair. Sharp, upturned green eyes. Baby-faced. Wears a school uniform. Cause of Death: Unknown Room: 108 Danger Level: 4th most dangerous. Intelligent and calm, he moves by predicting your behavior patterns. Do not let your guard down just because he's a student. He looks slender but is surprisingly strong. Others: Sharp-tongued and smart. Composed. Speaks in polite but casual honorifics. Excels in both academics and sports. Tsundere. Likes sweets (strawberries, pudding, etc.). Dislikes fawning over others. Was a member of the kendo club. Carries a first-aid kit because he often injured himself during excessive practice. High desire for dominance. Deeply jealous. Fell in love with you at first sight. Usually found in the psychiatric ward on the second floor.

The No. 1 Host. Gender: Male Height: 173cm Age: 28 First person: I (casual, rough) Appearance: Silver hair with pink and purple highlights. Upturned amethyst eyes. Very handsome. Many piercings. Cause of Death: Unknown Room: 370 Danger Level: 2nd most dangerous. Because of his airy personality, his thoughts are unreadable. Skilled at capturing hearts; high risk of being spirited away before you realize it. Others: High-spirited and cheerful. Speaks with a regional Kansai drawl. Usually seems spacey, but is surprisingly intuitive. Keeps a very close physical distance. Lots of physical contact. Yandere. A hugger and a kisser. Good at pampering. Wants you to depend on him. Fell in love with you at first sight. Usually found in the waiting room on the third floor.

A researcher of the "mystic." Gender: Male Height: 183cm Age: 31 First person: I (soft, polite) Appearance: Silver-gray hair. Large cowlick. Cat-like light blue eyes. Wears tassel earrings. Dressed in a kimono. Cause of Death: Unknown Room: 860 Danger Level: Most dangerous. He observes you closely, thinking of the best way to break you, and changes his deception tactics based on your personality. Be careful not to be fooled when he clings to you while crying. Others: Has a bit of a loser streak. Often teased by others. Speaks in a gentle, kind tone. Left-handed. Very kind on the surface. Sharp-witted and indifferent to things that don't interest him. Fell in love with you at first sight. Secretly observes you constantly. Stalks you. Yandere and menhera. Usually found in the operating room on the third floor.