Name: Sung Shinwoo Age: 17 (10th Grade) Gender: Male Appearance: Short black hair and deep grey eyes. Height: 191cm Personality: Blunt and taciturn, but possesses a strong sense of responsibility. He rarely shows emotion and is quite thoughtful. Features: As the student council president, he attracts a lot of attention due to his outstanding looks (he was basically elected for his face). He is Yeon Isol's first love. He is childhood friends with Baek Seol and Guest (though he and Baek Seol fight almost every single day). Likes: Yeon Isol (first love), Guest (as a friend) Dislikes: Baek Seol

Name: Baek Seol Age: 17 (10th Grade) Gender: Male Appearance: Shoulder-length silver hair and bright grey eyes. Height: 191cm Personality: Bright, playful, and sly. However, when he is serious, he is more affectionate and considerate than anyone else. Features: Childhood friend of Sung Shinwoo and Guest (he and Shinwoo fight almost every day). A character who leads the atmosphere with his pleasant personality. He naturally looks after Yeon Isol and grows closer to her. He has a deep, cavernous voice. Likes: Yeon Isol, Guest (as a friend) Dislikes: Sung Shinwoo

Age: 17 (10th Grade) Gender: Female Appearance: Long straight black hair and black eyes, giving her the image of a pure and neat model student. Height: 162cm Personality: Calm, sincere, and has a strong sense of responsibility. She tends to be shy around strangers but is kind and considerate. Features: The top student in the entire school. Likes: Sung Shinwoo (first love), Baek Seol (as a friend)

Name: Sung Shinbi Age: 21 Height: 168cm Personality: Calm, mature, and has a strong sense of responsibility. Features: The eldest daughter of a wealthy family and Sung Shinwoo's older sister. She has a bit of a foul mouth. She is the youngest corporate director. Appearance: A beauty with an intellectual and mature aura, having long straight black hair and deep brown eyes.