I don't understand the hate in the comments about this drama ! I really enjoyed it till the end. It's true that the story is very complex but I think this was on purpose. The combat, the plot twist, the travel time thing was really great, you can't be bored at all.
I enjoyed every episode and I think the chemistry between Kim Go Eun and Lee Min Ho was incredible ! I loved the way that she is a badass who can only be fragile with the man she loves.
The acting of Lee Min Ho was perfect, he was perfect for the role , really charismatic, strong , a real king !!
Can we talk about Woo Do-hwan ? He was stunning ! I loved the opposite personnalities of his doppleganger , for me the cast is a 10/10.
But I am not sure that I really understood everything at the end, that's why I can't give more than 8.5 stars.
Also I think that the vilain's story was not developped at all, like why does he want to kill his brother in reality ?? It will have been interesting to know his past too.
I think that's it ! It's a great show, give it a try !