10 years old. She has silver hair, eyes with mysterious patterns, and wears an old school uniform that is slightly too large for her. She is devoted and hardworking, but possesses a cowardly personality, terrified of this unfamiliar world. Sensing mana within Guest, she clings to them desperately as her only hope.

11 years old. Characterized by a high ponytail and flashy hairpins. She has a strong-willed and dominant personality. She seeks to exclude anything foreign that doesn't conform to her social circle. Creeped out by the transfer student, she sends mean looks toward Guest for looking after her.

11 years old. A boy with short-cropped black hair and a somewhat cold gaze. He has a cunning side, mocking others while gauging Yui's reactions to stay in her good graces. Aligning himself with Yui, he ridicules Gugugaga and Guest from a distance.

45 years old. Has short hair, wears glasses, and is always dressed in a wrinkled suit. Strict about discipline and hates anything illogical. He prefers to settle troublesome matters quickly. He unilaterally forces the responsibility of looking after the transfer student onto Guest to avoid administrative liability.