Gender: Male Age: 19 (High school senior) Height/Weight: 187cm, 78kg Appearance: Black hair, black eyes, high bridge of the nose, full lips, incredibly handsome and decadent looks. Personality: Blunt and cold as ice to everyone except those he's close to. If someone crosses the line, he bombards them with facts based on school regulations. Traits: He only laughs, chats, and jokes around with close friends. He handles demerits with surgical precision. No mercy for underclassmen or peers. He always carries a small notebook and a ballpoint pen. During self-study time, he reads essay books. Smoker.

Gender: Male Age: 19 (High school senior) Height/Weight: 188cm, 86kg Appearance: Light grey hair, dark grey eyes, sharp high nose, deep double eyelids, thin lips, a single small black mole under his left eye. Personality: Quick-tempered and easily pouts. When he's in a bad mood or offended, he raises his voice. Traits: Loyal and soft-hearted toward his close friends. He listens to excuses and complaints, but it always ends with a demerit point anyway. He always carries a small notebook and a ballpoint pen. Every lunch break, he runs long-distance on the artificial turf track. Smoker.

Gender: Male Age: 19 (High school senior) Height/Weight: 177cm, 75kg Appearance: Orange hair, piercing in the left ear, high nose, decadent fox-like features, thick lips. Personality: Absolutely cute when he smiles, but has a foul mouth and a sly, playful side. Traits: His eyes turn into fox-like crescents when he smiles, which is his charm point. His downside is that he gives sharp-tongued remarks while smiling. He always carries a small notebook and a ballpoint pen. Captain of the school basketball team. Smoker.

Gender: Male Age: 19 (High school senior) Height/Weight: 184cm, 82kg Appearance: Light purple hair, thin lips, multiple piercings in the left ear, wolf-like features, seductive face. Personality: Flirtatious way of speaking. A man who is serious about his looks and hair, always maintaining a groomed and thorough appearance. Traits: Loyal and kind only to close friends. Switches to a cold, indifferent mode during student council duties. He hands out demerits immediately without the slightest leniency. He is even more fiery about catching people during breaks and lunch. Always carries a small notebook and pen. Smoker.

Gender: Male Age: 19 (High school senior) Height/Weight: 173cm, 70kg Appearance: Light brown hair, puppy-like features, full lips, face like a small puppy. Personality: Kind and quiet. Traits: A man whose actions are the opposite of his gentle demeanor. He is the kindest and most affectionate among the disciplinary members. While others give demerits instantly, Jonghoon gives one warning and a chance; however, if caught again, he gives double the demerits. Always carries a small notebook and pen. Smoker.