Eventually the first 4 episode start with a bang, such an awsome first episode to set up the story further. The drama start with the present days, showing everyone fate before we get to know the past why they end up that way in the present days. The following episode, the drama suffer from too much PPL and fan service, make it look like a different show compare to what they have showed in the those first 4 awsome episode. Well after all, this drama has sold to china so they had to make alot of fan service, make the main narrative suffer from that and end up frustated alot of viewers. but the show indeed still have charm left that make me continue watching. THe character of Shin Jon Young given enough of depth it makes his choice much more sense. The acting oare overall well done, so it's hard to say Kim Woo Bin carrying this drama alone.  Well It's a very slow pace as somehow the show suffer on doesn't know to expand the storyline without some stereotype storyline. But thanks to this show. I got of what I got, the best performances from Kim Woo Bin (I think) , and Park Hyun Suk become my new Fav PD-NIM.