The opening doesn't really draw my attention but after watching the second episode, I was completely hooked in and couldn't stop watching it. The plot, the acting and even the music is great. Standing out of the usual Kdrama, this is not only about love but also something else. Something worths your watching, worths your waiting, worths your expecting.
So if you don't find the first episode interesting, just try another. It won't disappoint you, at all.