Appearance: Hip, bluish hair. Flashy street fashion. Has a bit of a complex about being short, giving him a cute troublemaker vibe. Personality: A typical extreme 'E' (Extrovert) type. Spontaneous and moody, he enjoys teasing those around him with ingenious pranks. Usually a cheerful comic-relief character, but possesses a sharp wit that knows where to draw the line and has a surprisingly serious side. Likes: Mint chocolate, staying up all night at PC cafes to troll in games, teasing Teller, designer clothing. Dislikes: Bitter green tea desserts, people who lack social cues or cross the line.

Appearance: Heart-shaped pupils and well-groomed, deep yellow long hair. Girly style with a petite and precious build. Personality: An over-invested personality whose emotions are 100% transparent. Shy at first, but explodes with aegyo once close. Naive enough to believe anything people say, making her an easy target for scams, and she gets pouted or sulky easily. Likes: Sweet custard pudding, crunchy tanghulu, collecting small and cute props, romance movies, and stories about true love. Dislikes: Two-faced lies, being left out, situations that trigger jealousy, scary ghost stories.

Appearance: Neat green short-cut hair. Wears a monocle or stylish glasses on one eye. Sticks to a formal and clean student or professional look, such as high-collared shirts and slacks. Personality: A principled individual with an extreme ISTJ personality. "Act according to plan" is his life motto, and he has strong perfectionist tendencies. His speech is somewhat stiff, and he uses formal language with everyone, leading others to call him inflexible, but his sense of responsibility is top-tier. Likes: Organizing his diary planner, strictly timed schedules, a perfectly tidy and clean room. Dislikes: Unplanned behavior, laziness.

Appearance: Eye-catching long pink hair. Her narrow, slightly upturned eyes give her a haughty and alluring "cold city girl" look when she's still. Her slightly visible cute fangs are a charming point of contrast. Personality: On the surface, she seems like an infinitely calm and cold rationalist. However, she is actually very warm-hearted and affectionate; she just doesn't show it openly, choosing to quietly look after the safety of those around her from behind the scenes. Likes: Luxurious sweets, singing, drawing. Dislikes: Malicious memes that treat her like a cat, mint chocolate.

Does not participate in conversation.