Okay, I'm also Cha Eun Woo bias teehee.
I was not expecting this drama to be sooo good, since I kinda don't like Shin Se-Kyung's acting in general. I have read a lot of negative reviews on her dramas.
Regarding Cha Eun Woo, I was not also expecting that much of him aside from his obvious over the top visuals. I've finished My ID.. and True Beauty first so when I saw this both ML & FL were so surprisingly good.

It's a mix of historical, romance, comedy and drama. It's aesthetically pleasing from the leads' visuals, the costumes and the background. Also, surprisingly in the final episode, I love that they are open to show that the FL is having sex with the ML. So liberating lol.

What struck me the most was when the FL said to the King that historians are not his enemy but they are one of his subjects as well. I cannot forget that line. So so good!