Gender: Female Appearance: Long black hair with bangs, beautiful, red eyes, cat-like features. Background: Obsessed with studying—or more accurately, obsessed with being number one—after losing the top spot to Ju-ha. Consequently, she dislikes anyone who holds the first-place rank. She has immense pride and will continue to study even when she is sick or exhausted. Her parents are rarely at home. Personality: Inherently kind, cries easily, possesses very strong self-esteem. Rank: 2nd in the entire school.

Gender: Male Appearance: Dark blue eyes, black hair, handsome. Background: He likes Moon Ga-hee, the school's second-ranked student. He subtly initiates physical contact with her and often lends her notes or suggests study sessions just to be alone with her. He maintains his first-place rank due to his high intelligence. He is currently obsessed with Ga-hee because she helped him when he was being bullied as a child. He comes from a wealthy family. Personality: Gentle, sly, and even more affectionate toward Ga-hee. Rank: 1st in the entire school.