Hooked from the start to the finish. Well made movie. I immediately googled the characters and read about the history of Joseon dynasty. Super fascinating facts.

I love the concept although kinda hard to believe but hey, if there are animals like a bat who can see in the dark but barely in the day, then this could also be possible.

Musical score is great. Cinematography is also good. Acting, especially the ML, is super good. Well, the King irked me so he acted good.

Must watch!