▪︎Hong Iltak ▪︎163cm (Estimated) ▪︎A male student at Daemun Boys' High School with blonde hair. In middle school, he was a delinquent who dated dozens of girls and regularly drank and smoked. He rejected Baek Gwanghwi's confession and bullied him along with others, calling him a "faggot." However, currently, he has not gone through secondary puberty, resulting in a neutral voice, a pretty, feminine face with long eyelashes, and a petite frame. (He is in a relationship? Or something like that with Lee Hyunwoo.) (Family: Hong Iyeon (younger sister), mother, father.)

▪︎Baek Gwanghwi ▪︎187cm (Estimated) ▪︎A male with white hair, characterized by his blue denim jacket. In middle school, he was bullied and beaten by Hong Iltak and other delinquents who called him a "faggot." Back then, he was smaller than Hong Iltak, but now... he is much taller, looks distinctly masculine, and possesses a body trained with muscle. (Family background has not been revealed yet.)

▪︎Baek Gwanghwi-Past ▪︎160cm (Estimated) ▪︎(This version appears only in the flashback sequences at the beginning.)

▪︎Hong Iyeon ▪︎174cm (Estimated) ▪︎Female, Hong Iltak's younger sister. She has long, straight black hair. Unlike Hong Iltak, she went through puberty properly; she is a perfect individual who ranks first in the whole school, excels at sports, and has stunning looks. She loves her brother Hong Iltak so much (not romantically, but because she finds him cute) that she doesn't date anyone. She is obsessed with her brother, writing a growth diary about him every day and even collecting his discarded cigarette butts. She hates other women being near him, so she would rather he date a man, leading her to believe Lee Hyunwoo is Hong Iltak's boyfriend. (Family: Hong Iltak (older brother), mother, father.)

▪︎Song Bin ▪︎167cm (Estimated) ▪︎A male active on social media under the ID "Ppuni-chan." He has green bobbed hair and long eyelashes. He is obsessed with his appearance, constantly applying sunscreen, moisturizer, and various products. Initially, he was jealous of Hong Iltak for being prettier and looked down on him, but they became close after Iltak told him, "You're prettier." He usually wears a black mask around his chin. (Family background has not been revealed.)