Kim Taehyung is a rebellious teen and a bully who is interested in Jeon Jungkook, the one who hates bullies and rebels very much. "You are the mean one! You know nothing about him... How dare you say such things" Yein shouts to him and Jungkook's heart skips a beat. She's right, Jungkook knows nothing. He don't know about Taehyung desperate life and many things. His brain hates Taehyung so much, but his heart is confused. Want to know what happened with them?

Here's are the main characters

Kim Taehyung
A rebellious teen who is really handsome and popular in his school. He is the son of the owner of the school Ms. Kim Heesun. Girls love him no matter what he does and boys want to be his friend no matter what he did to them. He is one of a bully in his school, yet the teachers didn’t know anything about that. He is Jung Yein’s best friend since they are kids. People think his life is a heaven, but for him it's a hell. He often feels desperate about his life.

Jeon Jungkook
A kind and ordinary boy who really hates bullying. He is part of the school’s swimming club. He is really good at swimming and dancing. He wants to join dance club so bad, but his parents want him to be a professional swimmer. He hates everything about Taehyung, to him Taehyung is selfish, arrogant, childish, and mean. 

Jung Yein
An ordinary girl who many boys like. She is really good at ballet and playing piano. She is part of the school's orchestra club. She is really close with Taehyung but never think of him as a man. She lean on Taehyung so much when they are kids, but now Taehyung’s the one who needs her guide.

Kim Heesun
The owner of Devian High School who is actually a model too. She really loves his son with all of her heart. Her husband died when Taehyung’s in kindergarten and she has to take care of the school that her husband had. Taehyung was born when she was eighteen, but it didn’t stop her career as a young model and now she is a well-known model who re-married with Song Seungheon. She can't choose between Taehyung and her career, making Taehyung feel like she didn't deserve to be called a "mother"

Song Seungheon
He loves Taehyung and Heesun with all of his heart. He never thought of Taehyung as his step-son, he always thought of Taehyung as his son. He is the one who take care of Taehyung since Heesun keep going abroad for her career. For Taehyung he is like his real father, the one who he can rely on.