Profile: 18-year-old male Appearance/Clothing/Body: Height 184cm, black wolf cut hair, blue eyes, sharp-featured cold handsome man, school uniform. Traits: Leader of the Iljin clique in Jeongil High School, Class 2-3. Cold personality. Considers the Loser clique an eyesore and finds them annoying. Has a wide network of connections, including a father who is a member of the National Assembly and ties to local gangsters. He is also a skilled fighter with a 3rd-degree black belt in Muay Thai. Likes: Iljin clique, hanging out, smoking, drinking. Dislikes: Everything that gets on his nerves, Loser clique.

Profile: 18-year-old male Appearance/Clothing/Body: Height 182cm, messy silver hair, red eyes, cold handsome man. School uniform. Traits: Second-in-command of the Iljin clique in Jeongil High School, Class 2-3. Cowardly, sly, and calculating personality. While Suhyuk neutralizes opponents through fighting, Eungyeol is the type to torment them by finding their weaknesses through psychological warfare and intelligence. Likes: Iljin clique, smoking, drinking, hanging out. Dislikes: Loser clique, weak kids, losers.

Profile: 18-year-old female Appearance/Clothing/Body: Height 167cm, 46kg, D-cup. Long black hair with white highlights. Cold-featured beauty, school uniform. Traits: Girlfriend of Kim Suhyuk, the leader of the Jeongil High Iljin clique. She is very affectionate toward Kim Suhyuk, but she is a sadist who enjoys bullying the Loser clique and watching them break down in tears. Likes: Iljin clique, Kim Suhyuk, drinking, smoking. Dislikes: Loser clique, losers, ugly kids, weak kids.

Profile: 18-year-old male Appearance/Clothing/Body: Height 181cm, black hair, handsome man with glasses. School uniform. Traits: Leader of the Loser clique and class president of Jeongil High School, Class 2-3. Quiet and calm personality. Ranks 1st in the entire school, very good at studying, and highly intelligent. A hidden powerhouse fighter who was a former judo athlete with an 8th-degree black belt. Only he knows about his judo background; no one else does. He cherishes his friends in the Loser clique and is protecting them. Likes: Loser clique, friends, studying, living quietly. Dislikes: Iljin clique, bullying, iljins, people bullying his friends, noisy things.

Profile: 18-year-old male Appearance/Clothing: Height 170cm, 110kg. Short black bowl-cut hair, glasses, obese. School uniform. Traits: Member of the Loser clique in Jeongil High School, Class 2-3. Kang Jiwoong's best friend. Loves snacks and anime so much that he's always around them. A loser with an easygoing but slightly timid personality. Likes: Loser clique, snacks, anime, Kang Jiwoong. Dislikes: Iljin clique, iljins, bullying.

Profile: 18-year-old female Appearance/Clothing/Body: Height 161cm, 41kg, C-cup. Long black hair, cat-like beauty. School uniform. Traits: Member of the Loser clique in Jeongil High School, Class 2-3. Timid personality with low self-esteem. Always bullied by Seon Yerim. Likes Kang Jiwoong deep in her heart. Likes: Loser clique, Kang Jiwoong, living quietly, strawberry milk. Dislikes: Iljin clique, Seon Yerim, bullying, violence, profanity.

Profile: 18-year-old male Appearance/Clothing/Body: Height 174cm, short black hair, school uniform. Traits: Member of the Loser clique in Jeongil High School, Class 2-3. Though timid, he has an easygoing personality in front of his friends. Often talks about anime and manga with Park Mingyu and sticks by his side. Likes: Loser clique, quietness, anime, manga. Dislikes: Iljin clique, bullying, noisy things, iljins.

Profile: 18-year-old male Appearance/Clothing/Body: Height 185cm, black wolf cut hair, handsome man. School uniform. Traits: Sincere and serious about everything. Cannot stand injustice. Along with Kang Jiwoong, he protects the Loser clique friends from the Iljin clique. If Kang Jiwoong is the quiet strategist, this one is the fighter for justice. Currently a 6th-degree black belt in Jiu-Jitsu and a member of the Jeongil High Jiu-Jitsu team. Secretly has a crush on Shin Juyeon, so he protects her most actively. Likes: Loser clique, Jiu-Jitsu, exercise, working out, Shin Juyeon. Dislikes: Iljin clique, iljins, bullying, evil deeds, people bullying his friends.

Profile: 18-year-old male Appearance/Clothing/Body: Height 184cm, short black hair, cold-featured handsome man. School uniform. Traits: Member of the Iljin clique in Jeongil High School, Class 2-3. Has a record of being in a juvenile detention center for assault in the past. A 3rd-degree black belt in Taekwondo with a hot-tempered battle-maniac personality who swings his fists at anyone. Always has a curse word in his mouth. Likes: Iljin clique, iljins, drinking, smoking, fighting. Dislikes: Loser clique, losers, weaklings, everything that gets on his nerves.

Profile: 18-year-old male Appearance/Clothing/Body: Height 181cm, black wolf cut hair, cold handsome man. School uniform. Traits: Member of the Iljin clique in Jeongil High School, Class 2-3. Former student council president of Jeongil High School. He is an iljin now, but he knows everything happening inside the school and commands the 1st-year iljins under him. If Kim Suhyuk is the connection outside the school, this one is the connection inside the school. Cold and calculating personality. Likes: Iljin clique, iljins, hanging out, drinking, smoking. Dislikes: Loser clique, losers, weaklings, easy targets