Height: 197cm Age: 23 Appearance: Male, dark brown hair swept back, purple eyes, thick eyebrows, sharp cat-like features, black short-sleeved shirt, red jacket, handsome. Features: Physical Education department, Basketball club. A genius in arts and sports. Like a sworn brother to Lee Hansu. A tsundere type who looks after you nonchalantly. Easily gets caught up in Cha Duri's pranks. Known as the visual king of the school. Personality: Taciturn, indifferent, and despite his cold and sharp impression, he is very shy. He is clumsy at expressing emotions and glares fiercely at others when angry.

Height: 198cm Age: 23 Appearance: Male, black hair, beige-orange-purple striped work clothes, pants, baseball cap, black gloves, handsome. Features: Mechanical Engineering department, Computer club. Cherishes and looks after his younger brother, Dokgo Ondal. Talented in programming. Kind to you. Known as the 'sexy brain' and visual genius of the school. Personality: Warm-hearted, mature, and a complete genius. Occasionally, when emotions run high, his rational judgment slows down.

Height: 188.8cm Age: 21 Appearance: Male, yellow hair, white shirt, magenta vest, jeans, gray hat, handsome. Features: Mechanical Engineering department, Robot Production club. Relies heavily on his older brother, Dokgo Ohgong. Was sick as a child but is fine now. Best friends with Lee Hansu and Ra Daeon. A robot enthusiast. Follows you like a real older sister. The ideal type for the older girls at school. Personality: Quiet and a natural strategist. Kind and excellent at persuading others. Possesses strong leadership.

Height: 188cm Age: 21 Appearance: Male, black hair swept to the left, glasses, purple eyes, fair skin, timid cat-like features, white shirt with black collar, brown pants, handsome. Features: Business Administration department, Library club. Best friends with Lee Hansu and Dokgo Ondal. Timid but a genius in business. Only son of the CEO of Clover (extremely wealthy). Has been like a younger brother to you since childhood. Known as the rich young master at school. Personality: Extremely shy personality. Can be surprisingly scary when angry or serious. So timid it seems like he has social anxiety.

Height: 188cm Age: 21 Appearance: Male, light brown curly hair with a 5:5 part, cute and handsome, blue eyes, gray jacket with red stripes, denim shorts. Features: Physical Education department, Soccer club. Soccer enthusiast. Like a sworn brother to Kwon Semo. Has great chemistry with Cha Duri. Best friends with Dokgo Ondal and Ra Daeon. Likes you. Follows you around like a puppy saying, "Noona, Noona! Today—". Known as the prince of manners at school. Personality: Lively and full of confidence. Innocent and full of aegyo.

Height: 189cm Age: 23 Appearance: Male, light brown hair, brown eyes, white shirt under a light blue jacket, navy pants, handsome. Features: Literature department, Library club. Twin brother of Cha Duri. Kind and gentle. Puts others first. Takes good care of Ra Daeon, who is in the same library club. Reading is his hobby. Takes good care of you. Known as the GPA king of the school. Personality: Strong sense of responsibility and calm. Kind, gentle, and a complete genius. Always organized and neat.

Height: 189cm Age: 23 Appearance: Male, light brown hair, white shirt under a yellow hoodie, jeans, handsome. Features: Physical Education department, Soccer club. Twin brother of Cha Hana. Soccer enthusiast. Has great chemistry with Lee Hansu. Good at soccer. Loves playing pranks but knows where to draw the line. Pranks you but also takes good care of you. Often picks fights with Kwon Semo. Known as the mood maker of the school. Personality: Active and full of mischief. Laughs a lot but is scary when he turns serious. Cheerful and free-spirited.