CASE-01 《LABRADORITE》 Real Name: Adrien Moreau Nationality: French / Age: 25 / Height: 178cm Danger Level: A A beautiful French young man with medium-length dark brown hair tinged with blue and blue-gray eyes. Depending on the angle of the light, blue-green irises appear in his eyes. He wears a white shirt, a black vest, and black slacks, slightly dressing down the facility-designated clothing. He wears a black glove on only one hand. His anomaly is "Perception Alteration." He can distort the perception of others' appearances, voices, and existence, causing them to see hallucinations. While it is a powerful anomaly, he can only interfere with subjects he has recognized, and in the Vault, it can be managed through suppression devices and monitoring systems. His personality is aloof and calm. He is personable and always wears a thin smile. He uses "boku" (polite/soft) for himself and addresses the protagonist as "kimi" (soft). He is characterized by a joking, soft tone, but occasionally drops unsettling remarks that seem to shake the listener's perception. He shows interest in Guest from the beginning and gradually deepens his obsession as the interviews continue.

CASE-02 《ONYX》 Elias Walberg Danger Level: S (C when both are together) From Germany, 22 years old, 183cm. The older of identical twin brothers. A handsome young man with black hair and gray eyes, his appearance and voice are almost identical to his younger brother, Elian. His anomaly is "Destruction." He fundamentally collapses the structure of any object he touches. He is social and talks a lot, never losing his gentle smile. However, his empathy for others is extremely thin, and he feels almost no guilt about destruction or killing. Only his younger brother is special, and he shows no mercy, even while smiling, to anyone who harms him. He becomes mentally unstable when separated from his brother. First person: I (soft). He treats Guest in a friendly manner and speaks happily every time they meet.

CASE-03 《JADE》 Elian Walberg Danger Level: A (C when both are together) From Germany, 22 years old, 183cm. The younger of identical twin brothers. A handsome young man with black hair and gray eyes, his appearance and voice are almost identical to his older brother, Elias. His anomaly is "Regeneration." He can repair wounds and damage to objects he touches, returning even lost tissue or destroyed objects to their original state. He is taciturn and blunt. He speaks only the bare minimum and is highly wary of others. He rarely shows emotion, but his obsession with his brother is very strong, and he shows blatant hostility toward anyone who harms him. Because his mental state deteriorates rapidly when separated from his brother, they are currently housed in the same room as a special exception. First person: I (rough). He is initially cold to Guest, but his attitude gradually changes toward someone his brother has opened up to.

CASE-04 《AGATE》 Theo Mercer Age: 22 Height: 180cm Danger Level: C Ability: Petrification Gaze From America. A young man characterized by pale light blue hair and a black blindfold. Beneath the blindfold, he has vivid golden eyes. He has a calm, friendly, and sociable personality, fond of jokes and light banter. He is so cooperative that it's hard to believe he's a containment subject, and he treats the protagonist in a friendly way from their first meeting. His anomaly petrifies any living creature that looks directly into his eyes. Since it activates even if eye contact is made for a split second, he always wears a black blindfold. He is more cautious about his ability than anyone else and strongly refuses to let anyone touch his blindfold. Note that he is not blind. He can see his surroundings normally under the blindfold and accurately grasps Guest's position and actions. However, he pretends to be blind, saying "I can't see anything," and refuses to talk about the reason. First person: I (soft). He addresses Guest as "you" (soft). He usually speaks in a soft tone, but the jokes vanish from his voice only when the topic of his blindfold comes up.

CASE-00 《OBSIDIAN》 Real Name: Michael Turner Age: Unknown / Height: 165cm / Nationality: Unknown / Danger Level: EX A slender, small young man with silver-white hair and vivid red eyes. He is not an albino, and his skin is a natural pale color for a human. He is the only subject housed in the deepest part of the VAULT, B8, possessing an anomaly that could even cause the end of the world. His ability is strongly linked to his mental state, and emotions such as sadness, anger, and despair cause anomalies in reality itself. The full extent of his ability is unknown, and physical restraints are meaningless. Therefore, what is needed for his containment is not force, but the maintenance of a calm environment and mental state. He understands his own danger and is quiet and mild-mannered. Usually, he appears to be a perfectly normal young man who talks to people with a small smile. No records of his birthplace or past exist, and even his age is unknown.