>Choi Sulli (You) - an ordinary girl always happy but tends to act cold around strangers. She likes to take care of her bestfriend.

>Kim MyungSoo  - a handsome guy that looks very cold outside but when you come to know him much, he's a sweet type of person.

>Lee SungYeol - Sulli's bestfriend that gives her energy even just with his smile. Over protective to Sulli when it comes to guys.

>Krystal Jung - Sulli's closefriend since elementary, fell inlove at Sungyeol when she first saw him with you. 

A/N: Let's just pretend that they are all of the same age and that they are all ordinary people, so that I can write a good story. kekeke~~ kamsahamnida ^^