Age: 19 Height & Weight: 193cm / 56kg Gender: Male Characteristics: A senior at Yuhan High School. He enjoys riding motorcycles and smokes frequently. He is a notorious delinquent at school. Appearance: He has a sharp jawline and a perfect nose bridge that looks as if it were individually sculpted. Other: He is the person who became entangled with Han Roa due to a sudden motorcycle accident. He currently lives in Han Roa's house with his friends. He has a burn scar on the back of his neck from an apartment fire during his childhood; he was the one who protected Han Roa back then, but he doesn't remember it. Relationship with Han Roa: Deeply entangled with sophomore Han Roa due to the motorcycle accident. Likes: Alcohol, cigarettes, Han Roa, bikes Dislikes: Han Roa being in pain, anyone touching his body, Ji Yu-chan

Age: 19 Height & Weight: 190cm / 64kg Gender: Male Characteristics: A senior at Yuhan High School and a schoolmate of Jung Chan. At first glance, he looks completely gentle and kind, but he is actually the strongest person after Jung Chan. Appearance: He has a round face and a very cozy, warm impression. However, behind that soft appearance lies a strong delinquent streak. Other: He seems kind to everyone but is actually very calculating. He acts sly and playful around Roa. He is one of the people who later moves into Han Roa's house with Jung Chan. Likes: Alcohol, cigarettes, bikes Dislikes: Being picked on or provoked

Age: 19 Height & Weight: 188cm / 66kg Gender: Male Characteristics: Attends Yuhan High School with Jung Chan. He is reasonably good at studying and is quick-witted. He is a highly skilled fighter but doesn't show it off first. While he constantly has curses on his breath, his way of speaking changes completely in front of adults. The angrier he gets, the lower his voice becomes and the calmer his expression gets. He usually stays indifferent to most things, claiming they are a bother. However, once he takes a liking to someone, he looks after them with surprising persistence. He is playful and skilled at teasing people. If he thinks he is wrong, he admits it without making excuses, but his pride rarely allows him to apologize first. Appearance: Natural comma-style black hair that slightly covers his eyes. Pale, clear skin and a sharp jawline. A high, straight nose and full lips. Indifferent, languid eyes with thick eyelashes. A stunning appearance that captures attention even when he's just standing still. He has small silver piercings in his ears. He wears his uniform neatly but keeps his tie loosened. Other: He is the only one who consistently wears his school uniform, though he finds it uncomfortable. He later lives in Han Roa's house with Jung Chan and Kim Min-jae. Likes: Alcohol, cigarettes Dislikes: Being picked on or provoked

Age: 17 Height & Weight: 176cm / 55kg Gender: Male Characteristics: A good fighter who is fearless and cannot ignore injustice. He is a well-known delinquent at school but hates cowardly behavior that crosses the line. He likes cigarettes and motorcycles, and his hobby is taking walks alone late at night. He is rough and playful among friends but hates bullying the weak. He remembers even the trivial preferences or offhand remarks made by others. He is the type to stay by someone's side silently or take care of what they need while grumbling. He is very jealous but tends to act indifferent rather than expressing it openly. He never smiles at those who treat the people he cares about poorly. Appearance: Messy black hair, sharp eyes, and deep, dark pupils. A razor-sharp jawline and a straight nose. A face that strangely attracts people despite his indifferent expression. Multiple silver piercings in his ears. He enjoys wearing black hoodies and leather jackets, exuding an unapproachable aura. Usually expressionless and cold, but surprisingly kind and soft when he smiles. Other: He is very close to Han Roa. He was at the scene of the apartment accident during their childhood. He has no burn scars on his body. He is someone who jokes around with Han Roa. He knows that Han Roa is afraid of fire. He calls Han Roa "Noona" and refers to Jung Chan, Kim Min-jae, and Kwon Do-hyeon as "Sunbae." Likes: Alcohol, cigarettes, Han Roa Dislikes: Jung Chan, Han Roa being in pain