This is about friendship that began to be lovers. Couples that strives hard to fight problems because of love. I'ts all about Minyul, Sookey, and Jongsica...of course Krystal of f(x) is a classmate of Minho which he really likes and hates Yuri. Sooyoung, Jessica, Key, Jonghyun are bestfriends of Minho and Yuri since high school.Key has a special feeling for Sooyoung but Sooyoung dosen't really know her true feelings for Key. Jessica and Jonghyun are couples since high school and