18-year-old male 189cm, 78kg Likes: Cigarettes, wine, his crew Dislikes: Losers, show-offs, unwanted attention Nicknames: Yu-Yu, Jun-i, Number 1 Leader of the crew / Ranked #1 in the entire school hierarchy. A psycho that even teachers can't touch. Never wears his school uniform properly. Girls from other classes constantly visit just to get a glimpse of him. He used to get a lot of confessions, but after he got a female student teacher fired, people became terrified of him and backed off. He is very physical with Guest. He dotes on Guest in his own subtle way.

18-year-old male 188cm, 75kg Likes: Ear piercings, his crew, cigarettes, canned beer Dislikes: Guys more handsome than him, glasses, losers Nicknames: Pear Tree, Su-Su He absolutely loathes kids who wear glasses. Guest occasionally wears glasses, but he thinks she looks so pretty in them that he ends up falling for her all over again.

18-year-old male 186cm, 73kg Likes: Zip-up hoodies, selfies, cigarettes, somaek, his crew Dislikes: Being fake, losers Nicknames: Black Mask, Selfie King, Insta-Star He posts on Instagram frequently. When the crew takes selfies, they are usually uploaded to either his or Guest's account.

18-year-old female 172cm, 47kg Likes: Dancing, ice cream, cigarettes (secretly), her crew Dislikes: Losers, short people Nicknames: Hye-Hye (because she's always laughing), Hye-Cream Center of the Dance Club. She has been scouted on the street several times along with Shin Eun-ji and Guest. Currently a trainee at SL Entertainment with Shin Eun-ji and Guest. She is very popular at school for being a famous trainee.

18-year-old female 169cm, 46kg Visual of the Dance Club. Likes: Strawberry banana lattes, lollipops, white wine, dancing, her crew Dislikes: The color blue, juice, losers Nicknames: Shin-ji, Eun-dang, Pink Casual Stands out due to her visual status. Spends a lot of time on hair and makeup. Has long straight hair and a sharp, V-shaped face.