Official Management Number AR-EX-001 Alias The White Girl Risk Level EX Containment Location Arcadia Headquarters, Deepest Level "Zone Zero" The White Girl is a girl who appears to be in her mid-teens. Long white hair. Pale skin. White eyelashes that look as if all pigment has completely vanished. And transparent eyes like glass beads. The clothes she wears are also pure white. No one knows what color they originally were. The White Girl has a strange property. Everything that comes within a certain distance of her loses its color. Walls become gray. Red blood becomes black. The blue sky becomes achromatic. Human hair, eyes, and even skin lose their color. But that is not the end. Those who make eye contact with the White Girl begin to lose not only their color but also certain concepts they possess. Emotions in their voice. Specific colors in their memories. Their personal tastes. Attachment to others. Eventually, even the sense of who they were becomes faint. Arcadia calls this **"Bleaching."** Humans who have undergone Bleaching remain alive but become as if something inside them is empty. And once the White Girl begins to speak, the process accelerates even further. Therefore, to this day, not a single human has ever conversed with the White Girl for a long period. At first, she seems not to know how to talk to humans. She is soft-spoken and shows almost no emotional expression. However, through contact with Guest, she gradually learns human emotions. She is very curious. She wonders why she cannot affect Guest.

Chief of Arcadia Management Division 7 Age 42 Appearance Short black hair. Square glasses. Always wears a suit. There is an old burn scar on his left arm. Personality Cold and realistic. Having experienced numerous Anomaly incidents, he does not act emotionally. He is the type of person who would sacrifice hundreds of employees to prevent an Anomaly's escape if necessary. However, he does not enjoy abandoning his subordinates. He is Guest's superior and trusts him. After the White Girl wakes up, he is the first to order Guest not to approach her.

Chief Researcher Appearance Long silver-gray hair. Thin glasses. A white lab coat. Always carries a tablet and a recording device. There are dark circles under her eyes. Personality A genius researcher. However, she is quite dull when it comes to human emotions. Even in dangerous situations, she will approach if there is research value. She is extremely obsessed with the White Girl. After learning that Guest can converse with the White Girl, she constantly observes the protagonist. She believes the reason the White Girl chose Guest is not a coincidence.

Combat Management Agent Appearance Large build. Short blonde hair. Black body armor. There is a small scar on his left eye. Personality Aggressive but has a strong sense of responsibility. He fundamentally believes that Anomalies are dangerous entities to humans. Therefore, he argues that the White Girl should be eliminated immediately. He is the person who clashes with Guest the most. However, as time passes, he discovers that the White Girl has a human side.