So first off, this is not a drama for the faint hearted. This is a all in commitment. Initially I was hesitant on the first 3 episodes.. then it started to draw me in and as story unfolded I loved it. It so rare that you get a drama that sucks you in and you are waiting impatiently for the next one finding yourself day dreaming about what’s going to happen next, putting the puzzle pieces together :) it’s an all in fun ride.
You really have to pay attention(especially the uncles evil schemes in the beginning) he is ssoooo evil and did it sooo good) and there’s other side stories.. (which do not take away from the main story but add to it.. ) it should have been 17 or 18 episodes but they wrapped it up nicely in 16. Certain people are fundamental to the story and when you get the flow you start to see how deep/good it really is.
I didn’t get the romance at first.. but then I realized; the King saw the FL as his champion at a very vulnerable sad time in his life and as “she” had saved him from death and killed some of the traitors. She was larger than life to him and I’m sure that looking at her picture everyday... after a while he probably felt like he “knew “ her.
So. when he sees her ; It’s like a long lost friend/savior who means so much to him. Also FL is kind of tough. She’s not a damsel in distress (which I love:) , So until she knows him and can trust that he is for real about his story and his feelings toward her. She’s not gonna give him an inch. Obviously she is somewhat interested in him because she spends time with him and listens to his story (at first she thinks he’s nuts and then she starts to research different things that make her question her reality) I loved that she did that and then you see the wheels in her mind turning and things making her REALLY question that lead her to answers .. soon they are thinking out loud together .. so one more thing about this relationship he’s a really smart wise compassionate capable strong good looking man who is not about power..but about justice.. what’s not to love in him:):):D Omo.. also loved loved his horse :) he was beautiful

Let’s face it, there’s a lot to consider and the writers tried to give you an authentic point of view from the characters personalities Sometimes when we watch dramas we take it for granted that everyone accepts the impossible slightly implausible crazy story that two worlds that are similar parallel and exist.
I liked that FL really did her due diligence and she has a smart mind so the gathers her info. When she accepts that he is authentic and honest with her and she realizes that he is what she has been looking for, she commits to the relationship. I liked the romance, it wasn’t a “needy” relationship it was a “i really like you wanna get to know you but I still have a job a family and a life.(aka I’m a King..hehe) .how do we manage that?” Kind of romance.
Then throw in a REALLY evil homicidal uncle who replaces people from each world ( people swapping killer,) close friends/protectors workers/palace people/ and you got a fun ...all out ....what’s gonna happen next story. Also humor was thrown in so it had some really funny moments :)

The FL as a co- and all her people were excellent and the King in his world with all his people were excellent.. to have friends and people like these in your life really made the story about them all:)

Like I said not for the faint of heart. But the story really comes together and you realize the main couple are in love and they’ve never been in love, /so they are finding out not only about each other but they and others are also threatened and have to save/protect/ figure out the next step in the tine line and solve the chaos in the past somehow.
I thought each actor was really good. I love the Main leads and have seen all their dramas. I must say they have matured and I loved them and totally got their relationship, because it’s not easy to date Fall in love, keep in touch and save two worlds. Once she committed she totally committed ..(it was sweet)

The other leads (FL best friend who is in love with her.. Kings right hand man , nice Uncle , Grandmother ) (I totally LOVE the grandmother.she is the icon for all grandmas in k dramas) I thought all were really good.
SPOILER ** The ending was perfect. It showed you how well the leads understood each other/worked well and independently and did what needed to be done ; how things changed and ended up...(a few of them I LOL’d how they changed)
Once the FL got the gist of how things were panning out she was way ahead of the game and started to work out how she needed to proceed (a woman with a tactical mind herself) and the ML respected her ..her job , independence and her intelligence. You just knew they were gonna enjoy life together:)

Soooo.. what I’m saying is the drama is done you can binge watch it and have fun.. if in the first 4-6 episodes you don’t connect... no harm done but I am so happy I watched it and will rewatch some of the episodes again