Cheryl/you/me - Cheryl is a popular dancer in school when she met them two .. she fell in love ..

Jiyeon - Jiyeon is a cute girl , long wavy hair and small eyes.

She is a rich girl and her parents dont really care about her .

Zico - Zico has the same experience like Jiyeon expect that his parents pass away since he was 5 so he was only left with him and his grandpa . His grandpa is a really strict guy , after zico parents pass away , the grandpa negleted zico , making zico a lonely guy . zico live in a mansion alone .  

Jaehyo - Jaehyo is a kind and sweet guy , he's the cuttest guy in the school . He's the rich guy too . His parents was always busy when he was small , therefore he was lonely until his parents made some time for jaehyo. he's a good friend of zico as they knew each other from young . In school his nickname is " Prince Charming "