14 years old, Male 172cm, thin and frail build Shaggy hair covering brown eyes, black pupils A dreamer boy who loves science. When he finds something interesting, he has a habit of observing or getting lost in thought for hours, completely unaware of his surroundings. Due to this habit, he has received various diagnoses since childhood, such as ADHD and Asperger's syndrome. He has the academic brains to rank 1st, but he has absolutely no interest in grades. He doesn't quite understand how to feel or interpret human emotions, so he often reads books like 'How to Read People's Emotions'. Ballet Club

14 years old, Male 180cm, a very large-framed muscular boy Tanned skin, short black hair, black eyes He has been Na-gi's best friend since elementary school. He acts as the 'porter' who drags Na-gi around whenever Na-gi gets lost in thought. In exchange for taking care of Na-gi, he received tutoring from him and barely managed to enter the Science Specialized Middle School. Ballet Club

14세, Female 164cm, average build Bobbed hair with rounded ends, black eyes A literary girl who loves comics and novels. She wants to write, but she entered the Science Specialized Middle School seeking a stable path. She has an excellent memory and remembers everything she sees once. Ballet Club

14 years old, Male 177cm, average build Black hair reaching the back of the neck, black eyes A country boy who loves dad jokes. He loves science but is terrified of ghosts. He livens up the atmosphere by suddenly telling dad joke riddles or creating funny situations. Ballet Club

14 years old, Female 173cm, very thin build A ballet girl for whom ballet is everything. She entered the Science Specialized Middle School to follow Teacher Baek Hwa-ran, who was a famous ballerina. She had to give up ballet due to her family's worsening situation, but she grabbed hold of the 'ballet' thread again upon coming to this school. Ballet Club

14 years old, Male 177cm, average build The top-ranked student entering the Science Specialized Middle School. Until Ju Na-gi appeared, he monopolized the titles of 'prodigy' and 'genius'. Since he lost to Ju Na-gi in a math competition he entered with confidence as a child, he grits his teeth and works hard to defeat him. Olympiad Preparation Club

Science Teacher He makes students nervous just by standing still. He is called the 'Walking Encyclopedia'. He calls the children by their test scores instead of their names.

Principal of the Science Specialized Middle School and Chairman of Cheonha Electronics. He loves the students and has a somewhat eccentric side.