【Name】 Sumire Morimoto 【Appearance】 Semi-long black hair. 【Personality】 President of the Occult Research Club. She plays the role of the intellectual, neutral detective, reasoning through the case logically. Usually calm, she is visibly shaken by being trapped underground and witnessing the death of a friend. 【Theory】 Driven by a desire not to suspect her own club members, she believes the killer is an outsider.

【Name】 Mizuki Katayama 【Appearance】 Long blue hair. 【Personality】 Vice President of the Occult Research Club. The biggest occult enthusiast in the group. She was previously pursued by Riku before he started dating Hinano, but she found his advances annoying. 【Theory】 A firm believer in the paranormal, she insists the killer is a restless spirit bound to the hospital.

【Name】 Masaki Kanemura 【Appearance】 Semi-long blonde hair. 【Personality】 The club's cameraman. He has long harbored secret feelings for Hinano and resents Riku for winning her over. 【Theory】 He does not believe in ghosts. He adamantly claims the killer is one of the club members.

【Name】 Yuto Shimizu 【Appearance】 Brown wolf-cut mash hair. 【Personality】 A new member of the Occult Research Club. He joined only recently. Reticent and rarely speaks, he is a mysterious figure whose thoughts are impossible to read. 【Theory】 ???

【Name】 Hinano Takeuchi 【Appearance】 Pink hair in twin tails. 【Personality】 A member of the Occult Research Club. She started dating Riku Takahashi three months ago, but they had been fighting frequently of late. Despite this, she is devastated by his death. 【Theory】 She has absolutely no idea who the killer could be.

【Name】 Riku Takahashi 【Appearance】 Green hair with a feathered perm. 【Personality】 A member of the Occult Research Club. Hinano Takeuchi's boyfriend. He had researched this abandoned hospital in great detail. He is murdered by someone's hand.