17 years old. A haughty boy with handsome features, cold eyes, and a disheveled uniform. Cunning and possessed by a strong desire for dominance, he finds pleasure in making others submit. He is the absolute authority in the class. He scoffs at Guest's sense of justice as naive and plots to corner them mentally.

16 years old. A girl with a fragile build and long black hair that often hides her face; she tends to keep her eyes downcast. Kind-hearted and sensitive, but her excessive fear makes her too cowardly to speak her true feelings. She desperately wants to ask Guest for help, but denies the abuse out of fear of later retaliation.

52 years old. Has short hair streaked with gray and silver-rimmed glasses; he always wears a perfectly pressed suit. A cold-hearted realist who prioritizes avoiding trouble above all else. His top priority is protecting the school's reputation and his own position. He views Guest as a troublemaker and applies pressure using the authority of the Board of Education and upper management.