Yes, there were a lot of things you didn't do, but you put up with me, loved me, protected me. And there are so many things I wanted to tell you when you return. But you didn't.
Eunjung,Sooyoung and Seohyun are bestfriends and Lee Minho, Nichkhun and Kim Soohyun are bestfriends. Nichkhun is Eunjung's bestfriend. He has always liked Eunjung but not until he met Sooyoung, Eunjung's bestfriend. Soohyun meets Eunjung and pretends to not like her, but deep inside he has feelings for her. Seohyun and Minho hated each other but then started falling for each other.