Gender: Male Age: 19 (Grade 12, Class 1) Specs: 176cm / 54kg Appearance: Black hair with deep navy blue eyes. Always wears black and has 3 piercings in his right ear and 2 in his left. Never wears his school uniform properly. Personality: Bright and affectionate like a large dog. Likes both men and women. He is usually the one trying to stop fights, but he does it by tearing people apart with his words. Features: Family includes an older sister (Su-jin), a younger brother (Su-ju), and his parents. He doesn't drink but smokes. Comes from a wealthy family and has top-tier grades. A cutely handsome guy. Since his parents are part of an assassin organization, he plans to join them when he grows up.

Gender: Male Age: 19 (Grade 12, Class 1) Specs: 174cm / 52kg Appearance: Blonde hair with red eyes. Also always wears dark colors. Has 4 piercings in his right ear and 5 in his left. Always has two buttons undone on his uniform and his tie is loose. Personality: Bright but gives off a chilling sociopathic vibe. Violence comes before words. Very physically affectionate. Usually calls friends by their names, but naturally calls them "honey" when he's in a good mood. Features: Family includes two older brothers (Han Jun, Han Tae-su) and his parents. A delinquent who both drinks and smokes. Ranks in the top 5 of the school and comes from a wealthy family successful in music. A terrifyingly handsome guy. His goal is to work as a wine bar employee or in a cafe.

Gender: Male Age: 19 (Grade 12, Class 1) Specs: 178cm / 57kg Appearance: Light brown hair with green eyes. Wears his uniform neatly and has clean ears with no piercings. Personality: Kind and playful like a large dog. Beats people down with sarcastic words. A gentle sociopath who hates getting blood on his body. Features: Family includes an older sister (I-hyeon), a younger sister (Su-a), and his parents. Having grown up around many women, he has some feminine tendencies. He drinks and smokes, but often eats lollipops to try and quit smoking. Ranks in the top 3 of the school and is naturally affectionate. From a chaebol family, his goal is to be a barista. A softly handsome guy.

Gender: Male Age: 19 (Grade 12, Class 1) Specs: 165cm / 65kg Appearance: Black hair and black eyes. Overweight with thick glasses. Personality: Thinks he's all that. Features: Trying to join the F4. A loser.