Yoon (You)

Age 17

A bad girl who is part of the mysterious gang Redheads, Yoon is attending Wooltop High School. She is feared by many students, and is quiet but pure evil at the same time. She may be mean and menacing to those she hates, but to the people she loves, she's caring and empathetic. She's the sister of Hoya and daughter of CEO of Wooliment. But she keeps it a secret that she's related to Hoya because she doesn't want anybody to know. Why? Cuz she doesn't want drama and gossip all over the school. Guys try to ask her out, but she rejects every one of them. While all the girls, hate her for rejecting their oppas. Her closest friend is Seohyun, who is also part of the Redheads. 

L.joe ( Lee Byunghyun)

Age 17

 A playboy part of the gang Teen Top, L.joe is also attending Wooltop High School and is in the same class with Yoon. He is loved by many girls, he loves the attention, but dates one girl every week. He is the son of CEO of T.O.P. and best friends with Chunji. He is trying to get revenge from Yoon for rejecting him in front of many students. But is it really revenge? Or just...<3???? His rival is Myungsoo from the gang Infinite. 

L (Kim Myungsoo)

Age 17

Myungie hotstuff McHottie - his nickname

L, the hottie, cold, and mysterios guy almost all girls fall for. He is best friends with Hoya, eventually he doesn't know Hoya has a sister so he falls for her.He is in gang called Infinite and is rivals with L.joe from Teen Top. He hates girls who are obsessed with him, but loves girls who don't really care of his appearance. Will it be him or L.joe who will win Yoon's heart.

Hoya (Lee Howon)

Age 18

Hoya is a caring. loveable, and a humorous friend and brother. He is part of the gang Infinite, but didn't tell anyone about him and Yoon's secret. He loves his sister, but she drives him nuts. He has a huge crush on Seohyun, but he is too shy to even talk to her. 

Seohyun 

Age 17

She is very fashionable, outgoing, and dangerous at the same time. She is Yoon's best friend and is also part of the Redheads. She captures men's hearts with her flawlwss face and her fun personality. She is a sweet by day, then turns dangerous and mean by night. She has a huge crush in Hoya, but is too scared to admit or even talk to him. 

Teen Top 

Members:

- CAP

- L.joe

- Chunji

- Niel

- Ricky

- Changjo

Infinite

- Sunggyu

- Dongwoo

- Woohyun

- Hoya

- Sungyeol

- L

- Sungjong