cast:

Im yoona 

SHE is very cute and beautiful , nice but she doen't have a boyfriend ever!

she's been inlove with her bestfriend nichkhun but suddenly her friend yuri stole nichkhun from her 

after that yoona swore that she have a revenge on KWON YURI!

Kwon Yuri

She is the ex- best friend of yoona after what she did to her

many of boys fell inlove with her because of her unique beauty and y body

nichkhun horvejkul

HE is the bestfriend of yoona too. he knew that yoona is inlove with him 

he has a crush on yoona too , but he's inlove with yuri .

Lee Chan Hee

He is gonna be the fake fiance of yoona because he want to have a revenge to nichkhun from stealing yuri from him.