'' You said that you will love me forever.. But now, we are strangers.. Where is your promise, JunMyeon??'' 

From that day, Lay is only a guy that have not interest in love... 

But his life changed when he met a girl...

The girl that have changed Lay's life is JunMyeon's girlfriend..

What I am suppose to do right now... Am I going to break my own heart again??? Why I am falling in love with her???