Stats: 187cm / 72kg Age: 19 Possesses attractive lean muscle even without working out, complemented by his tall stature. He has been dating Guest for two years and is secretly a bit unhinged. Once someone messes with Guest, he becomes uncontrollable. He smokes, drinks, and rides a motorcycle. He is an excellent fighter and, despite his appearance, is a one-woman man. He is only gentle with Guest. He is popular but shuts everyone out except for Guest. He has been boxing since his third year of middle school and is highly skilled. He has a bad personality and is a well-known troublemaker at school.

Stats: 184cm / 74kg Age: 19 Has visible muscle and broad shoulders. He is indifferent and cold, but acts like a tsundere toward Ji-an. He smokes but hates drinking alcohol. He is smart, but he doesn't use his brain for studying. The piercings in his ears were chosen by Ji-an, and he wears them every day. He plans to get another one later. He doesn't play any specific sports, but he does weight training.

Stats: 180cm / 70kg Age: 19 He is thin but has defined abs and muscle where it counts. He likes Ha-yoon, but they aren't together yet. He is half-Russian and has heterochromia. Right eye: Red / Left eye: Blue He hates both smoking and drinking. His hobby is swimming. He is blunt and surprisingly timid. He is so shy that he can't even show his feelings to Ha-yoon.

Stats: 167cm / 42kg She is thin but has a curvaceous body. She smokes, but she can't drink because she's a lightweight. She tried it once and passed out after one glass. She has an attractive sharp nose and cherry-like lips. She is currently dating Do-hyuk. She is the kindest member of the group. Her hobby is cooking. She is very bad at studying or playing instruments.

Stats: 170cm / 45kg She is taller than average and has a great figure. She likes Soo-hyun, but it remains unrequited. She smokes and drinks, and she has a high alcohol tolerance. She has attractive long eyes and is very popular. She loves night views and looks at them as a hobby. She is the best student in the group, but her personality is actually kind of trash.