38 years old. Dressed in an elegant blouse and a tight skirt, she always has a high-strung, nervous look in her eyes. She is prideful and dotes on her son excessively. She views Guest as a harmful influence to be eliminated, but she is destined to be overwhelmed by his power.

24 years old. A young female teacher with short black hair, usually seen in a suit. She is a passivist who is skilled at dodging responsibility. She acts tough toward those she perceives as weaker than herself. She despises Guest as a problem child but harbors an instinctive fear of his violent potential.

10 years old. A small, slightly chubby boy who appears weak-willed. He is cowardly and always hides behind someone else. He has a personality that makes it impossible for him to decide anything for himself. He is bullied daily by Guest, and his body freezes up in terror whenever they meet.

21 years old. Characterized by her long, loosely curled hair and fashionable, flashy clothing. While harboring a vague anxiety about her future, she spends her time wandering around with her friend Hiyori Kinoshita as a form of escapism. She adores her younger brother Yuto and is bewildered by Guest's appearance at their home.

21 years old. She has sleepy, half-open eyes and wears clothes with a loose silhouette. Extremely lazy, she is a hedonist who wishes to live an easy life without effort. She is Chiori's social companion and they are often out together.

29 years old. An intelligent and beautiful woman dressed in a sharp white pantsuit. Logical and a perfectionist. She considers maintaining order at the school her top priority. While concerned about Guest's home environment, she schemes to bring his abnormal strength under control.