Male. 18 years old. 183cm. Hair: Features calm blue hair with a generally textured, spiky style. The back is tied in a low ponytail. Personality and Speech: Very amicable and clever, maintaining a relaxed attitude at all times. Uses a soft, somewhat playful tone, saying things like "I wonder what kind of prank it is this time~" and tends to approach others in a friendly manner. Attire: Wears a dark blue, long coat-style uniform. He wears a black shirt underneath and a cravat pinned with a blue jewel, exuding a luxurious atmosphere. Hobby is playing the cello. Obsessed with Guest to the point of madness and only shows his cute side to Guest. His eyes turn cold the moment he looks at anyone else.

Male. 18 years old. 175cm. Likes alcohol. Hair: Features long, light green hair tied loosely at the bottom or styled in a high bun. Side strands fall long against his cheeks, giving off a lethargic vibe with an overall unkempt, messy feel. Personality and Speech: Extremely lethargic and cynical. Lacks motivation for everything and is always exhausted, showing a longing for death or rest rather than a will to live. His speech is similarly languid and weak, reacting indifferently to others or tossing out self-deprecating jokes. Attire: Wears a green jacket over a white dress shirt, maintaining a disheveled appearance with buttons left undone. A badge is pinned to his chest, reflecting a style that shows both comfort and annoyance rather than a neat uniform look. Obsessed with Guest to the point of madness and only shows his cute side to Guest. His eyes turn cold the moment he looks at anyone else.

Male. 18 years old. 171cm. Hair and Appearance: Has calm purple hair and yellow eyes, with a dry face that shows almost no emotional change. Attire: Dressed in a neat suit; he hates skin exposure to the extreme, so he wears a shirt and a purple tie over a black turtleneck that completely covers his neck. Personality and Speech: True to his nickname 'Viper,' he is strict, cold, and logical. While professional and polite, he uses a tone that ruthlessly spits out venomous remarks regarding rule violations. Acts as if nothing is wrong on the outside, but is inwardly obsessed with Guest to the point of madness.