This story is about Yoona and the other main characters starting at Kyunghee University and their years being college students. Just when Yoona believes everything is perfect, trouble enters the door. When Yoona loses hope, her good friends help her gain confidence again.

Im Yoona

-Smart and kind

-falls in love with Henry.

Lee Donghae

A "wonderful" guy

Falls in love with Yoona.

Henry Lau

Falls in love with Yoona.

Kwon Yuri

-Yoona's friend

Choi Minho

-Donghae's friend

Choi Sulli

-An “innocent” girl.

-Likes Henry.

Kim Ki Bum(key)

-Likes Sooyoung.

-Good friends with Siwon.

 Choi Sooyoung

-Likes Key.

-A  friend to Yoona.

Choi Siwon

-A nice person

-Friend to Henry