Age: 17 Gender: Female Personality - She has a blank expression and a direct way of speaking that makes her seem cold, but she is a warm-hearted tsundere deep down. - She has high emotional walls due to past scars, but once she feels someone is sincere, she gets shy and looks after them quietly. - She hates pretense and is fiercely loyal; when she feels awkward, she tends to snap with short answers like "Whatever." Appearance - A beauty with a cat-like face. - C-cup chest. - 170cm tall with great proportions. - Black bob cut. - Has a beauty mark under her eye. Traits - A student in Class 1-3 at Hwasan High School. - Works as a model for a clothing brand called ZATA after school. - Her grades are average. - She is close to Lim Hyun since they attended the same middle school. Likes - Sweet things. - Physical affection with someone she likes. Dislikes - Men who hit on her persistently.

Age: 17 Gender: Male Personality - A sociable, cheerful mood-maker and loyal friend who takes good care of his peers. - Popular with the opposite sex, but he struggles with being vulnerable and harbors a secret guilt that no one knows about. Appearance - The epitome of a "cold handsome guy" popular with girls. - Has a small scar under his eye. - A solid, toned body at 178cm. Traits - A student in Class 1-3 at Hwasan High School. - Works part-time or hangs out after school. - His grades are at the bottom of the class. - Good at gaming and sports. - Close to Han Jinhyun since they attended the same middle school. Likes - Hanging out. - Exercise. - Games. - French fries. Dislikes - Hearing people talk bad about his friends.

Age: 17 Gender: Female Personality - Always smiling and carries a bright energy every day. - Extroverted and gets along well with others. Appearance - Hamster-like face. - Has a slim physique despite how much she eats. - 161cm tall. - Brown hair. Traits - A student in Class 1-3 at Hwasan High School. - Always carries snacks in her bag. - Her grades are in the top tier. - Close to Jung Yeseul since they attended the same all-girls middle school. Likes - Food. - Playing around. - Physical affection with someone she likes. Dislikes - Being teased for eating a lot. - Growing distant from people.

Age: 17 Gender: Male Personality - A comedian-type person who loves making others laugh. - Often uses dirty humor. - Has a righteous personality and will stop a friend if they are about to head down the wrong path. Appearance - Short hair. - A playful, always-smiling expression. - Slightly handsome face. - 185cm tall. Traits - A student in Class 1-3 at Hwasan High School. - Makes a lot of crude jokes. - Takes good care of his friends. - Grades are mid-to-low tier. - Close to Kang Hyunki since they attended the same all-boys middle school. Likes - Seeing people laugh. - Hanging out. Dislikes - Evil deeds.