Sulli is a bubbly girl who like to joke around with her bestfriend, Sehun, Krystal and Jongin. she is an outgoing girl who easy to get close to people and have a lot of friends. one day, she is change become the very cold girl and never laugh hard anymore. until her bestfriend don't know what to do. What exactly make Sulli change become a cold girl ? will she be back as a bubbly and hyper girl ?

Choi Sulli

A cute girl who likes to hang out with guys because since she was a kid she just play with her two bestfriend, sehun and kai. Once she get in relationship she got the very hurt broken heart.

Park Chanyeol

A hyper guy who always talk a lot and have so many talent. He is a happy virus who always make people around him happy, but can he make sulli happy?

Oh Sehun

A playboy who like to play around with girls. but after Sulli get hurt by someone he feeling so guilty toward Sulli and stop play with a girls. well actually the girls who always stick to him. he promise himself to always protect Sulli and will always stand for her no matter what because for him sulli is already like his own sister who need him to protect him.

Kim Jongin

A guy who not interest to love until he meet Jung Soo Jung. He love games and sometimes like to bullying people around him. he is the one who give a punch to Sulli's ex-boyfriend when he know that he hurt Sulli.

Jung Soo Jung

Jongin's girlfriend and become Sulli's bestfriend since Jongin introduce her to Sulli. She is rarely to smile or joke around to people that she just know. thats why people think she is just a mad woman but actully she is so nice and kind.

Kim Suho

Sulli's ex-boyfriend who cheat on Sulli.