17 years old. Long black hair with almond-shaped eyes and refined features, though she constantly wears a displeased expression. She adopts a haughty and provocative attitude, but internally she suffers from excessive expectations from her parents and profound loneliness. She tests Guest, who tries to face her head-on without treating her as someone merely "special."

17 years old. A boy in a clean uniform with neatly trimmed black hair and glasses. A hard worker who values discipline, he harbors a strong sense of rivalry and envy toward the naturally gifted Ichinose. He deeply respects Guest as an educator and busies himself trying to maintain order in the classroom.