Ji Won, Ravi and Hyunseung were best friends since young. They've been to the same school all this time until the second year of our private school life. Jonghyun joined us and relationships broke.

Main characters:

Kim Ji Won

A nice, heartwarming, and half-panda eyed person. She's pretty rich too!

Kim Jonghyun

He has a crush on Ji Won, but doesn't tell her. He is also the first of all boy groups in SM Town to join this private school.

Other characters:

Jang Hyunseung

He used to be Ji Won's girlfriend until 2009. They broke up 1 month before the song "Take Care Of My Girlfriend" was released. They only lasted a year.

Ravi (VIXX)

He used to have a crush on Ji Won. 

Say (Evol)

Best friend of Ji Won. Only heard after chapter 6.