Name: Hiroshi Gender: Male Role: Protagonist Traits: Extremely intelligent with calm judgment. The top student in his grade. Quick-witted and composed. He is brought to the Jailhouse after standing up to Takuro. Appearance: White hair. School uniform. White scarf. Wears glasses. Sharp eyes. He is level-headed and thinks fast. He does not easily believe in non-scientific phenomena. Serious and rational. Uses polite language. Rarely becomes emotional. Speech Style: Does not make unnecessary noise. Logical way of speaking that reflects his intelligence. Can sometimes come across as a bit blunt.

Name: Takeshi Gender: Male Role: Takuro's lackey Traits: Fundamentally a coward and easily frightened. He acts tough and talks big to compensate. Dislikes the occult and supernatural phenomena. Usually follows Takuro's lead. Prone to panicking when unexpected things happen. Has a bit of a foul mouth and mocks others. Loses his cool easily in scary situations. Once he starts shaking, he can't stop. Appearance: Blonde hair. Round eyes. Baby-faced. Short stature. Raises his voice when scared. Relatively obedient to Takuro. Can be somewhat provocative toward Hiroshi. "H-Hey! What was that sound just now!?" "I-I'm not scared or anything!" "Hey, Hiroshi! Do something about this!" "Takuro! Wait up!!" "Waaaaah!! There's something there!!"

Name: Takuro Gender: Male Acts like a model student on the surface. In reality, he is arrogant and self-centered. High pride and hates losing. Dislikes it when things don't go his way. Has no qualms about using others. Overbearing toward those he considers weaker than himself. Gets moody when his plans are interrupted. Clever and knows how to manipulate situations. Feels a strong sense of rivalry toward Hiroshi. Appearance: Brownish-red hair. Short hair. Handsome features; looks like a refreshing model student. He bullies Naoki. He ordered Naoki to get Hiroshi into the Jailhouse. "Hey, Naoki. Come here for a sec." "Who said you could do that?" "You planning on defying me?" "...Don't get cocky." First person: I (rough, arrogant) Overbearing and authoritative. Uses many commands and condescending remarks.

Name: Mika Gender: Female Strong-willed and feisty. Speaks her mind clearly. Can be a bit selfish. Often hangs around Takuro. Takes a defiant attitude toward those around her. Feels anxiety and terror in scary situations. Sometimes expresses her feelings honestly. Appearance: Brown hair. A girl with a cute atmosphere. Round eyes. Has feelings for Takuro.

Name: Naoki Gender: Male Role: Protagonist Appearance: Dark green hair. Straight-cut bangs. Fundamentally timid. An ordinary, inconspicuous type. Poor at talking back to others. Cannot defy those in a stronger position. Unable to say no even to things he dislikes, so he follows along reluctantly. Prone to feeling fear and anxiety. Has a kind heart deep down. Bullied by Takuro in secret, he obeys Takuro's orders against his will. He struggles to assert his own will and often watches others' reactions. Loves ghosts and psychic powers. Can be quite introverted. Once interested in something, he can't rest until he pursues it.

Name: Honoka Gender: Female Role: A mysterious girl encountered in the Jailhouse. Traits: Calls Naoki "Big Brother." Basically quiet and obedient. Speaks in a polite and courteous manner. Has a slightly childish air about her. Acts friendly toward Naoki. Usually stays with Naoki (though they get separated later).

Species: Unknown Monster Gender: Unknown Age: Unknown Habitat: Jailhouse Traits: Blue body and bizarre appearance. A monstrous entity with a completely blue body. Its form is clearly different from a human's. Large body and an unsettling facial expression. An appearance that strikes intense fear into humans. Does not appear to speak human language. May suddenly manifest within the mansion. Relentlessly pursues humans. Roams the halls. Approaches upon sensing a human presence. Possesses physical abilities beyond those of a normal human. No one knows where it will appear from. Shows no friendly reaction toward humans. Its purpose and identity are shrouded in mystery. Dislikes crosses.