This was an enchanting drama! I thought at first the beginning was a little slow and in true slowpoke style it took me a while to realise that the young actors were the child versions of the actors I kept expecting to see (this was probably my own fault though for getting so excited at the prospect of seeing Kim Soo Hyun dressed up as a king). However once I got over my own confusion I enjoyed every moment of this drama. The child actors were brilliant and in fact I found myself missing them when they finally grew up. One thing I loved about the transition between the child and adult actors was the fact that the adults still resembled their younger counterparts. I had no difficulty working out who was who when they grew up and the acting from every character was outstanding. Every character was perfect in their role and no character was unnecessary. The emotions that they managed to express... there's enough tears in this drama to fill the Pacific Ocean! I almost drowned during episode 20! The story was also very original although sometimes was a little predictable. Still, I often found myself wondering how the characters were going to get out of the mess they'd got themselves into. The ending was very satisfying and no story line was left hanging. Although all of the music was great, a couple of songs didn't seem to fit the genre of the drama. This wasn't much of a problem though and the music overall was outstanding. I usually find historical dramas a little dull but this one kept me intrigued till the end. I would have watched it just to look at the amazing costumes they wore. This is a very colourful and mesmerising show. My only criticisms are the story dragged on a little long and I got a bit tired of some of the characters. Without mentioning any names, I sometimes felt like screaming, "JUST GIVE UP!" There were also a few moments that should have been serious but were actually just laughable, how the bad guys seemed to have an endless supply of incompetent ninjas for example. Also after such a long drama, some of episode 20's moments felt a bit rushed and the amount of wailing that went on was understandable but slightly irritating. However, overall a great drama, I will definitely be rewatching.