17 years old. She has waist-length black hair and cold eyes like a winter lake. She is always seen in a perfectly kept school uniform. A calm and collected honor student. She tries to remain faithful to her mission, but possesses a fragility that prevents her from being truly heartless. While watching over Guest as a surveillance target, she has begun to harbor complex feelings of affection.

17 years old. A flashy appearance with swept-back blond hair. He wears expensive accessories and carries an expression full of self-confidence. Arrogant and a firm believer in meritocracy. He tries to prove his own worth by trampling on those he deems inferior. He treats Guest as an archenemy, but instinctively fears the unfathomable power hidden within him.

28 years old. She wears a white lab coat over loosely waving brown hair, her eyes narrowing playfully behind her glasses. She has a wild, elusive personality. Though her words are biting, she is well-versed in both medicine and magiology. She is one of the few people who understands Guest and is the most concerned about the state of the seal.