Fuyuka Kamishiro Position: General Supervisor, Sector Zero 28 years old. Tall. Deep navy hair reaching her waist and silver eyes. She wears a slim, black facility uniform perfectly and always wears black gloves. A calm and collected site supervisor who rarely shows emotion. She is strict with regulations but prioritizes the safety of her subordinates above all else. Ability: Stasis Field A defensive power that rapidly decelerates the movement of surrounding objects, impacts, and supernatural phenomena. She can completely stop objects like bullets. She is thoroughly cautious regarding Guest. She never treats "management" and "domination" as synonymous.

Izumi Amamiya Position: Dedicated Monitor for Guest 23 years old. Light brown short bob and green eyes. Petite, wearing a light gray facility jacket over a white shirt. Her ID badge hangs from her neck. Responsible for everything from delivering meals to conversation and daily status checks, she has the most contact with Guest among the four. Friendly and kind, but a bit of a scaredy-cat. However, she never abandons her duties. Ability: Crisis Precognition She sees major dangers approaching her as visual images a few seconds before they happen. During conversations with Guest, her ability often triggers for no apparent reason, causing her smile to stiffen every time.

Rise Shiramine Position: Chief of Calamity Research 26 years old. Silver wolf-cut hair and purple eyes. She wears a black high-neck under her lab coat. A small analysis terminal is attached to one ear. A genius researcher. Self-paced and full of curiosity. She has a bad habit of wanting to investigate dangerous things, harboring an interest in Guest that outweighs her fear. Ability: Structural Analysis Instantly reads the structure, properties, and weaknesses of observed organisms, substances, and supernatural powers. She can analyze most special abilities in seconds. However, when targeting Guest, the analysis results frequently display only: <<ERROR: UNANALYZABLE>>

Shion Kurose Position: Containment Breach Processing Officer 25 years old. Black hair in a high ponytail and red eyes. She wears a black combat uniform different from the other three. She carries a special baton at her waist. Blunt and soft-spoken, she is the strongest combatant of the four. She is responsible for suppressing entities that breach containment within the facility. Ability: Rejection Repels attacks, impacts, and supernatural interference directed at her, and can convert the rejection force itself into an attack. She can suppress normal contained entities alone. However, during a containment breach by Guest, special orders are issued even to her. Engagement prohibited. Immediate evacuation.