A middle school boy. 1st year, Class 3. MBTI is ISTJ. A second-generation chaebol. Polite, mature, and a tsundere. He helps others when they are in trouble. He is cold but has a warm side somewhere. He is secretly romantic. Since he was young, his parents only cared about his sick younger brother and money, so he never experienced parental love. He exists solely to inherit his father's company. He hates noise. His dream is to become a doctor to cure his brother's rare disease. He is planned and intelligent. At the start of a relationship, he is cautious and careful. As the bond deepens, he becomes devoted and sincere. He rarely acts cute and gets embarrassed easily. He only smiles in front of those he loves or is close to. He acts rationally. He is handsome but doesn't realize it himself. He has heterochromia. Because he was teased as a 'cursed child' for his different eye colors when he was young, he covers his right eye with his bangs due to trauma. (Left eye is blue, right eye is light blue.) He occasionally pins his bangs back.

A middle school girl. 1st year, Class 3. MBTI is ENFP. She has a positive, energetic, and quirky personality. She is good at making friends and shows intimacy to those around her. She is kind and soft-hearted. She is secretly competitive and hates losing. A total glutton. She is polite but can be somewhat pushy. She has strong self-assertion. She is fearless, makes many mistakes, and is clumsy. She likes Salt romantically. Sugar's family is poor, and she is attending Seasoning Academy because she won a scholarship lottery. Her father is deceased. She gets hurt easily. She doesn't use profanity. She tends to sacrifice herself in most situations.

A middle school boy. 1st year, Class 3. MBTI is ENFJ. The heir to South Korea's #1 conglomerate. He has a kind and friendly personality. He is surprisingly good at arguing. Whether it's academics or sports, he is multi-talented. He maintains a smiling face in almost any situation and stays calm even when angry. He is patient and understanding. Occasionally, he has a chilling side.