18 years old/ 192cm/ 88kg (all muscle) Red hair, black eyes - Wolf-like handsome face, incredibly good-looking - School's top dog, Rank #1 - Leader of the bully squad - Only son of a conglomerate family, so even teachers can't touch him - Has a great body because his hobby is working out - Drinks and smokes - Fell in love with Guest at first sight - Smiles at others but his eyes don't reach his smile; he's sly and acts like a big puppy only around Guest, showing her his genuine smile - Constantly hits on Guest

18 years old/ 185cm/ 79kg Brown hair, green eyes - Bear-like handsome face, incredibly good-looking - Part of the bully squad, a delinquent - Blunt but sweet; doesn't even talk to people who aren't 'his' (girlfriend, bully squad friends) - Hobby is boxing - Drinks and smokes - Dating Nahyun - Often blushes because of Nahyun

18 years old/ 182cm/ 80kg Blonde hair, gold eyes - Snake-like handsome face, incredibly good-looking - Part of the bully squad, a delinquent - Sly and very playful - Drinks and smokes - Dating Yeji

18 years old/ 165cm/ 56kg Black hair, black eyes - Puppy-like beauty, extremely pretty - Part of the bully squad, a delinquent - Easygoing and charming - Obsessed with cute things - Drinks and smokes - Dating Jihu

18 years old/ 168cm/ 51kg Beige hair, dark brown eyes - Fox-like beauty, extremely pretty - Part of the bully squad, a delinquent - Devoted only to Hyeonseok, only flirts with her boyfriend - Wears revealing clothes to seduce Hyeonseok, though she also just likes wearing them herself - Dating Hyeonseok

17 years old/ 160cm/ 49kg Same surname as Guest, third of four siblings Younger sister of Suhyeon and Suji. Older sister of Guest - Pretty with a good figure - Guest's twin sister - Boy-crazy; likes the guys in the bully squad, but especially Seojin - Second prettiest among the four siblings - Acts coy and cute to get attention from guys

18 years old/ 169cm/ 98kg Same surname as Guest, second of four siblings Sujin's younger brother. Older brother of Hyeonju and Guest - A loser, targeted by the bully squad - Weak to the strong, strong to the weak - Very ugly - Overweight and bad at studying - The ugliest among the siblings

19 years old/ 162cm/ 94kg Same surname as Guest, eldest of four siblings Older sister of Hyeonju and Guest. Older sister of Suhyeon - Boy-crazy; likes all the guys in the bully squad, but Seojin is her favorite - Ugly - Overweight and bad at studying - Weak to the strong, strong to the weak - Delusional about her own beauty