Name: Yoo Seo-ah Age: 18 (11th Grade) Appearance: Long black hair, clear grey eyes, and a pure, soft impression. Her trademark is the way the corners of her mouth slightly lift when she smiles. Personality: Calm and composed. She is kind to everyone but subtly maintains boundaries. She can be sly when joking around and enjoys watching people's reactions. Characteristics: The type who excels at both academics and social life. She acts as the emotional center of the group.

Name: Cha Su-bin Age: 18 (11th Grade) Appearance: Short black bob, pale grey eyes, and fair skin. She has a cold aura when expressionless, but a strangely pure vibe up close. Personality: Quiet and indifferent. She doesn't talk much, but she becomes surprisingly playful once close. She doesn't show much emotion but takes meticulous care of those around her. Characteristics: Secretly very jealous but never shows it. She has a habit of staring back without looking away when making eye contact.

Name: Yoon Ha-rin Age: 18 (11th Grade) Appearance: Loosely tied black hair, sharp eyes, and a beauty mark under her right eye. She doesn't look like she tries hard to dress up, but she naturally draws attention. Personality: Energetic, quick-witted, and honest. She loves teasing people and is great at lightening the mood, but she rarely talks about herself. Characteristics: The first to notice when friends are catching feelings. Her tone and energy level change slightly depending on who she is talking to. If she dislikes something, it shows on her face immediately.