Moon Lovers is a great drama which have little bits of everything (comedy, romance, tragedy, drama, politics etc) Eventhough it is great in some aspects, it also has ALOT of flaws. If you are looking for things that are happy and fluffy, this is not for you. It is a high budget drama and the casts are absolutely gorgeous but you can't expect too much either.

I mean it. If you have watched the Chinese version of Scarlet Heart (Bu Bu Jing Xin) you will know that this is like 10x worse in terms of the storyline details. It failed to portray the important massages this story supposed to give, unlike the Chinese version. Honestly, there's so much holes and missing gaps in this. What I did enjoyed more in the Korean Version than the Chinese version is the quality of production. I mean like every scene in this drama is absolutely beautiful, the costumes, the sceneries etc were really pleasing to the eyes. And, yes including the actors and actresses. (lol I'm quite shallow, but those bald head in the Qing Dynasty was like a big no no to me..)

Storyline:
I gave it a 6 out of 10 because of as said above.

Acting and Casts:
I gave this an 8. Most is credited to Lee Joon Gi. I'm not at all a fan of Lee Joon Gi but his acting in this drama was superb. He was able portray his character very well, it was realistic, believable and I enjoyed seeing him on screen. He is after all a veteran actor and I would love to see more drama with him in it. IU on the other hand, let's put it as she is not the best. IU is very pretty and don't get me wrong I am her hardcore fan as a solo artist (the reason I watched this). Though she wasn't the best she was able to played her character well enough that it was believable. Her acting get better after each episode! Another thing that I gave high rating for this is the chemistry between all the casts and specifically the main couple. I also love the casts for the villians and side characters (eg. Jisoo, Nam Joo Hyuk, Kang Haneul, Hong Jong hyun etc). I also love seeing idol turn actor/actresses in this drama as well (eg. Seohyun, Baekhyun)

Music:
10 out of 10. It was great. The music are all beautiful and touching and fits the mood well. Sung by many well-known talented singers. It was also very memorable and I legit have a playlist for all Moon Lovers's OST. Like when you hear the music you can feel the emotions etc. It's that great!

Rewatch Value:
I gave this an 8. Though for me personally I wouldn't rewatch this, most of the time I never rewatch any drama twice anyways and I don't have that much time on my hands. But for everyone else, I think the this drama's rewatch value is around 8 because every scence was pretty enjoyable despite the storyline not being that great. I didn't often need to use the skip botton at all which is a very good thing. (might be because I watch it when it first aired and so the episodes are scarce).

Overall:
I gave overall an 8. I would have given it lower if I were to compare this with thousands of other drama watched. Either way, this drama is okay. The casts and music saved the storyline. I personally enjoyed time travel (unless its rightdown cliche) so I gave it an additional points. Since I watch a lot of historical dramas I tend to judge it with very high standard. And since, I LOVE historical drama I enjoyed it either ways. :)