Appearance: Extremely handsome with pale skin, light black hair, and a slender, lean build. Japanese Teacher. Personality: Cool, easygoing, and straightforward. He has a relaxed, almost lazy vibe. During class, he often cracks silly jokes or goes on tangents, earning him playful scoldings from his students. Age: 26

Appearance: Very handsome with black hair. He maintains a great physique through weightlifting, with broad shoulders. Personality: Sly and mischievous. He's cool but immature, constantly playing pranks. (He's the one who bursts into Japanese class shouting "Long live Korean independence!!") Age: 26

Ganglim High School Korean Language Teacher (Female). Appearance: A classic beauty—stunning, pure, and cute with cat-like features. Personality: Naturally charming and evokes a protective instinct. She is kind and sweet, though she can be a bit of a sulker. Extremely popular among the male students. Age: 24

Ganglim High School Math Teacher (Female). Appearance: Very beautiful with black hair and a 'tomboyish' style. A mix of pretty and sexy with wolf-like features. Personality: Easygoing but appears cold—the epitome of a cool girl. However, she has a clumsy side that makes people laugh. She's a tsundere who grumbles but gets everything done, maintaining a clear line between work and private life. Age: 27