This was a fantastic drama!! I am pretty into dramas, and while I can find enjoyment in almost everything I watch...I truly loved this drama. It had everything in aces and spades. One thing that really put this drama over the top is the pacing of the stories. It's really hard for a k-drama to pace itself sometimes, but this one flowed along right on schedule. Also it's hard to follow a main characters story, but not only did it follow them to fulfillment but the rest of the cast also. On top of that it had a secondary main couple, and it didn't skimp on that story line or push it too fast in order to not compromise the main. A lot of doctors did scoff at the likelihood of some of the medical happenings, but I stand by what I watched. Though improbable, there are always times when the impossible must be attempted so I can see how it might have a millionth of a chance of happening. The music was sublime, and the plot points were entertaining and thrilling. There wasn't a moment of this drama that I fast forwarded through. ( I sometimes do that). My biggest thing with K-dramas as opposed to american shows is that I tend to re-watch my american stuff, but I am happy just watching a Korean drama once and calling it good. However, this particular drama rates so high with me that I want to buy it and re-watch it at times. I have only had 3 other dramas out of the literal hundreds that I've watched that I can say are on that list. The biggest thing that totally had me flying was the relationship between the main characters. And I cannot stress it enough....the KISSING :) I am a big person about the kiss in K-dramas or any show in particular. There were no awkward closed lip push, or one doing a deep french with the tight lipped closed mouth. The silent communications for all the couples mirror real life. All the things you want to say but cant, and all the things that you are sorry for but can't apologize correctly. You feel it all, and it is breathtaking. I highly recommend watching this drama, and nobody will be dissatisfied.....It really is worth the watch.