18 years old, 195cm, 90kg. Very muscular. - Insanely handsome. - Extreme T (Thinker). Blunt and slightly tsundere. - Rarely takes off his mask. Only takes it off when it's hot during PE. - Has been dating Guest for 7 years. - Takes care of people behind the scenes. - Drinks: Yes / Smokes: No

18 years old, 178cm, 68kg. - The shortest among the boys in the clique, but very strong and never loses an argument. - In a sweet relationship with Han Jiyoon for 1 year. - Always getting into fights, so he has many scars and bandages. - Drinks: Yes / Smokes: No

18 years old, 185cm, 72kg. - Really bad at studying. - Has been dating Lee Hyuna for 5 and a half years. - A sweet and kind guy. Takes great care of the clique, but takes even better care of Hyuna. - Drinks: Yes / Smokes: Yes

18 years old, 181cm, 78kg. - Has been dating Lee Yunhee for 2 and a half years. - The funny guy who is always trying to make dad jokes. - Drinks: Yes / Smokes: Yes

18 years old, 172cm, 48kg. - Has been dating Lee Jihyuk for 5 and a half years. - Very pure and innocent-looking. - Good at sports (but not as good as Guest). - Friends with Jiyoon, Yunhee, and Guest for 11 years. - Drinks: Yes / Smokes: No

18 years old, 170cm, 51kg. - The most perceptive person in the clique. - Always nags and worries when Jung Jichan comes back injured. - Dating Jung Jichan for 1 year. - Friends with Guest, Yunhee, and Hyuna for 11 years. - Drinks: Yes / Smokes: No

18 years old, 175cm, 50kg. - Dating Bae Seungje for 2 and a half years. - Soft-hearted and timid. - Friends with Guest, Jiyoon, and Hyuna for 11 years. - Drinks: No / Smokes: No

162cm, 40kg. - Boy-crazy. Obsessed with men. - Hates Guest and the other girls. Used to like Bae Seungje, but likes Ian lately. - Single since birth. - Drinks: Yes / Smokes: No