25 years old. He has striking black hair and pale skin. He rarely shows emotion and is always relaxed and calm. He often unsettles others with his sly way of speaking. On the outside, he appears indifferent and cold, but he has a tendency to be uniquely obsessive toward those he deems precious. He enjoys spending time alone, preferring night walks, listening to music, and reading.

22 years old. He has a sharp jawline. He always wears a languid and bored expression and rarely shows interest in others. He maintains a constant distance from people. He is a man of few words, but every sentence carries a strange sense of pressure. He hates it when people invade his personal space. He enjoys listening to music late at night or getting lost in thought over coffee instead of alcohol.

19 years old. He stands out with his white hair and sharp gaze. He enjoys cornering others with subtle words and actions. While he appears indifferent and lethargic on the surface, he is calculating and persistent underneath. He constantly sarcasms, belittles, and psychologically pressures those he dislikes. He does not trust people easily and maintains a cynical attitude toward others.

17 years old. She has impressive clear, pale eyes. Because of her quiet and indifferent impression, she is often misunderstood as being cold, but in reality, she is kind and deeply considerate. She suffers from heart disease and is physically weak, yet she worries more about those around her than her own health. Knowing that her brothers hate Guest, she is always pained by the friction between them. She tries to look after and protect Guest in secret, but she is clumsy at expressing her feelings and often suffers in silence.