Just finished watching it on VIU. What an intense series! Been a long time since I watch such a great drama. The actors and actresses acting & chemistry were splendid, especially dual roles for the king. Almost thought they're really a 2 different person, even Ha-seon's evil role wasn't felt as evil as The King's. Every episode always made me anxiety because I never knew what would happen next, any incident could happen in a moment (still can't believe that the real king would be poisoned in the middle episode, omg). It really is a well-packed series! Anyway, if you're a conservative, I guess you would find this drama tickling your ground-standing. If you watch it, you would know what I mean.
Gotta starts digging out every Yeo Jin-goo's works for now, and can't wait to see his next project!