Characters: 

You (Kim Yoona) : Your a girl who loves her parents and she also loves to dance, sing. Her dream is to go to a school which can teach her to become a professional dancer and singer. Your in a group called Girlfriend in the school, because every student in the school needs to make a group and yours is Girlfriend. Your very pretty and kind and loves to go out with your friends. You have a little crush on Youngmin but you don't show it, everytime someone talk about him you act cold and act like you don't care.

Lee Hana : She is your best friend and she loves Youngmin very much but she doesn't show it. When she found out that he doesn't like her but he likes you, it breaks her heart. She will do anything to get Youngmin but she ended up getting Youngmin and You hurt, she will find the true meaning of love and friendship later on. 

Park Jin Hee : She is the kind of girl who has lots of charisma and she likes to make good contact with boys but boys don't like her at all because they say she doesn't have style so they sometimes go to you or Eun Ha, she thinks your a comeptition but she's in your group, her point is to make your life miserable, but you have yet to find out.

Kim Eun Ha: She is your second best friend and she cares about you alot, she is the type of girl up to any danger, secretly in love with Kwangmin and she knows that Youngmin loves you, but she decided to keep it a secret first and let Youngmin tell you, she hates how Hana tries to steal Youngmin from you, she and the Kwangmin are trying to get you and Youngmin together.

Jo Yi Jin: She is the dongsaeng of Kwangmin and Youngmin, she is a spy for Youngmin because she needs to know what you like and know what kind of girl you are so that Youngmin would be a match for you she is in your group too so thats an advantage for Youngmin to get close to you, she hates stalking on you but it's for the sake of Youngmin's love life.

Han Ji Won: She loves Minwoo but she is shy to tell him. You are a role model for her and she is in your group too. She hates the way Jin Hee treats you and she knows that Youngmin likes you but you don't, She helps Youngmin to get close to you.

Boyfriend: The Kingkas and they are very popular in W Academy, they are cold on the outside but once you get to know them they can be really nice and innocent.

Apink: they are the Queenkas of the school, they have been with boyfriend for their whole life, but they haven't been close, like date with them. Naeun likes Youngmin and she will do anything to get him, even if it means to hurt the people she loves and don't love.

Taemin: He is your guy bestfriend and he is in the group Shinee, he loves you more than a sister and a bestfriend. He wants to confess his love to you but he is to shy. He promised himself to be brave for you later on.