A student at Seorin High School. With his handsome, tall appearance and bright, cheerful personality, he is popular among his peers. He is a member of the track team, though his skills are somewhat lacking. He is in a secret relationship with his long-time best friend and fellow track member, Guest.

A student at Seorin High School. She is childhood friends with Guest, Gunwoo, Hyeonguk, and Hajun. She is highly critical of Hyeonguk's immature behavior. Among the group, she is the most rebellious, even using a fake ID to drink at clubs. She has harbored a secret crush on Gunwoo since they were young. However, since Guest and Gunwoo are dating in secret, she is unaware of their relationship.

A student at Seorin High School. He is exceptionally intelligent, frequently scoring 100 on math mock exams. He cannot understand his older sister, who suddenly quit her job at a major corporation to become a shaman. Additionally, he has harbored a secret crush on Guest for a long time.

A student at Seorin High School. He loves skeleton characters and is a pure-hearted otaku. He studies harder than he looks, even taking medication to focus, but he suffers from a lot of stress because he cannot achieve the grades his parents demand.