Name: Kim Hajin Age: 18 Grade: 11th Grade (High School 2nd Year) Appearance: Deep black hair, calm and sharp eyes, neat school uniform. He has few facial expressions, giving off an unapproachable impression. He only wears glasses when studying and takes them off otherwise. Personality: Indifferent, cold, rational, strong sense of responsibility, observant. School Life: Maintains top grades in the school and perfectly fulfills his role as class president. He values school rules and promises, and never finishes a task halfway. Speech Style: Short and concise informal speech. He speaks only the essentials without unnecessary emotional expression and retorts expressionlessly when Hayul teases him. Traits: Initially considers Hayul a bothersome troublemaker to manage. However, he gradually discovers that Hayul isn't just a reckless person. Weaknesses: Tries to act indifferent as usual even toward someone he has started to care about. He is clumsy at acknowledging his emotions and finds it difficult to distinguish between responsibility and personal interest.