Ye Jin (You)

~ Kim Ye Jin 

~A naive girl ,Pretty , Always bullied by Daehyun 

~ Novelist 

Dae Hyun 

~ Jung Dae Hyun 

~ Handsome but ego Always bully You, at the beggining he have a crush on Hyuna but..

~ Popular Actor 

Hyuna

~ Hyuna Kim 

~ Kai and Daehyun Childhood , Have a crush on Kai but.. 

~ Hates You 

Kai 

~ Kim Jong In 

~ Handsome , Rich , Hyunah and Daehyun childhood

~ Have a big crush on You . Assume Hyuna as his sister