This was my first ever Korean historical drama and I've watched it only recently, because I tend to stay away from dramas which are hyped up which makes my expectations go waaaay above and I get disappointed in the end (it happened with "You are beautiful" for me).
I actually didn't expect this drama to be so good! The acting was on point, the music was on point, everything seemed fine, until the very ending, which I didn't like at all and yet it makes me wonder that maybe they put it this way for this drama to have another "season" or something, which would make sense. But in the end the ending was different from what I had expected and that is one of many reasons why this drama is so great.
Truthfully, I watched it because of Baekhyun, but I ended up falling in love with Lee Jun Ki! And I love IU even more now, they're such a great couple and their chemistry is just too perfect to be true. Overall, 9 out of 10. I'm looking forward to see more of Jun Ki and IU together in the future dramas :)