I absolutely love the relationships in this show. The friendship that transcends time is absolutely beautiful. The flashbacks to the past life always had me guessing, and were absolutely beautiful. The plot about the modern life does drag considerably towards the middle; I almost stopped watching. However, the last few episodes were completely worth it. This is definitely one of the top "made me cry" k-dramas I have ever watched just for the past life story alone.

Admittedly, I tried rewatching it. The rewatch value is really low because it's the mystery and past life scenes that really push you through some of the dragging portions. However, the guessing game that makes this drama so suspenseful is lost in a rewatch. The past life scenes alone though I could rewatch to no end.