Its a flashback about Sungmins story with Sunny,his so-called-besfriend.Sunny had a crush with Sungmin but she never tell him about it.Everything going well until a new student,Jessica, appeared in Sungmin life.Sunny was more heartbreak when her bestfriend,Yuri, started to walk away from her life.watch this:http://www.youtube.com/watch?feature=player_embedded&v=vTOJLiGXItk ForewordIts 100% my story:)actually it should be Yesung fanfic before this fanfic..and to understand the fanfic,you should read Yesung(upcoming) and Eunhyuk fanfic first-_-