Book 1: Based on Krystal's Single "All of a Sudden", the story revolves around the suppressed feelings of two people who've been together for a long time. What would a confession all of a sudden do to their relationship? would it be a happily ever after?   Book 2:  L's P.O.V after leaving Krystal behind. Will they be able to find love the second time around? (Lyrics are taken from L's single This Song is for You)