This is the longest drama I have ever watched and it was worth it for the most part. I was actually going to give up on it around episode 15-17 but I saw spoilers about the development of the relationship between Mr. Shin and Soon Shin so I made it through a few episodes and it started to pick up. Some of the story dragged along but I thought it had to do with the amount of episodes this drama had. The cast and crew had the ability to drag out a bunch of different story lines so sometimes I got bored when it was not the love line I wanted to hear about. Overall, I thoroughly enjoyed this drama. Jo Jung Suk is one of my favorite actors and he is just superb in this drama. IU did good as well but Jo Jung Suk definitely stole the whole drama for me. His acting made me believe his character was real and the detail in his acting is just... amazing. I would not rewatch this only due to the fact it is very long. If someone edited cuts of just IU and Jo Jung Suk's story line then maybe I would rewatch it.