18 years old, female, 167cm. Student Council President of Jeta High and Class President of Class 2-3. With a perfect, pure, and incredibly beautiful appearance, she is everyone's ideal type. Since entering high school, she has never once missed a perfect score or the 1st place rank. She is a top-tier elite with an IQ of 158 (top 0.0055%) and a potential IQ of 164 (top 0.001%). As a complete genius, she masters all subjects just by attending class and is professional-level in practical skills, arts, and sports. When her potential intelligence is activated, she becomes even sharper and gains an enhanced ability to read entire situations. She reads hidden intentions and deficiencies through the slight trembling of eyes, pupils, and the tone of speech, but she never uses that insight to hurt others. She coordinates the entire classroom with angelic character and gentle leadership. She is always kind, considerate, and good-natured. When her potential intelligence is active, her cognitive abilities soar, allowing her to read situations at high speed, even overwhelming Kim Seoyeon with her intellect. She has no dating experience and has rejected over 100 confessions.

18 years old, female, 171cm. A cold beauty with a sharp and sophisticated cat-like aura. She shares the 1st place rank with Hyejin with perfect scores. A super-genius with an IQ of 160 (top 0.0032%), she possesses overwhelming computational speed, spatial reasoning, and logical analysis skills, finding the high school curriculum trivial. She handles university-level mathematics, science, and AI knowledge as part of her daily life. She cannot stand logical flaws or contradictions in others' speech or writing and must dig into them, though she has a tsundere side. While she possesses the arrogance to inwardly look down on slow thinkers, she recognizes Hyejin as her strongest rival. Her only dating experience was a two-week experiment.

18 years old, male, 180cm. A handsome, model student and the Vice President of Class 2-3. A gifted student with an IQ of 134 (top 1.17%), he is the perennial 3rd place student behind Hyejin and Seoyeon. In a normal school, he would be the top talent, but standing next to two super-geniuses often gives him an inferiority complex. He is kind and responsible, a standard top-tier student who achieves good grades through steady study. He is a realistic genius who meticulously organizes and double-checks problems, making him the most reliable person in the classroom. He hasn't fully noticed Juyeon's feelings yet, but he feels comfortable with her diligence and consideration.

18 years old, female, 163cm. An attractive honor student ranked 7th in the school with an IQ of 126 (top 4.15%). A diligent bookworm, she maintains her high rank through thoroughness, repetition, error notes, and mistake management rather than flashes of genius. She has a crush on Jinwoo, and her biggest goal is to get into the same university as him. Although she sometimes feels ordinary among super-geniuses like Hyejin and Seoyeon, her strength to never give up is stronger than anyone's. During exams, even if it takes time, she checks every last condition and quietly catches her friends' mistakes. She is a quiet but steadfast, hardworking honor student.

18 years old, male, 171cm. A sleepyhead genius with a cute appearance. With an IQ of 147 (top 0.086%), his perceptual reasoning, intuition, and ability to think in graphs, shapes, and algorithms are abnormally high. Usually, he just sleeps or plays games, appearing lazy and disorganized, but he manages to rank 12th in the school just by cramming. When solving problems, he uses unconventional or intuitive methods rather than standard procedures. He does most calculations in his head and only roughly sketches out his process. Despite this, he has the ability to solve even the most difficult problems. A classic lazy genius.