Jongin, a cold-hearted guy who has no mercy towards anyone, even to his friends, sometimes. Except that one particular person who can melt his heart easily without any reason. He only allowed certain people to call him a nickname, Kai. 

Kyungsoo, a normal high school student who doesn’t have any special part that can attract people in the first sight. Despite that he has an angelic voice that can melt others easily but only certain people are able to hear his voice.

Doojoon, a guy who looks very scary but actually he is softer than anyone else. It’s just that he doesn’t want to show his true personality to anyone except those who are close with him but there’s this person who can expose his personality easily.

Yoseob, an adorable guy who is an expert of ‘aegyo’. He always act pity to get what he wants, if not he’ll just use the eventual method – crying. He always make up stories to get trust from others. He has the potential to be a spy.

Daehyun, a bad and mischievous guy who likes to interrupt others without feeling a bit sorry. He is the leader of bully, I suppose. Especially things or someone that he is interested in, he won’t let go of them easily. In brief, this is what we called selfish. But soon you will realized how NOT selfish he is.

Youngjae, the first placed victim who bullied by Daehyun the most. He never complain but nobody has an idea how much he hates Daehyun. He is a very helpful person, to anyone except to Daehyun.

Sungjae, Youngjae’s brother. He is very protective for his brother so he’s much like an older brother compared to Youngjae. Sometimes he can be over protective until insane.

Ilhoon, a cute guy who is very popular among girls and he can have a few girlfriends simultaneously and break up easily and get new ones. Only one person makes him not to have any girlfriends anymore.