Ah, where to start with this drama. I think it's one of, if not the best fantasy historical drama of all time. We are introduced to the world of Daeho which is full of mages and magic. The world-building is beautiful. The story is amazing, it kept me on the edge of my seat from either the beautiful romance or the intense action. The characters are written perfectly. I would like to point out, especially the villain, the number of emotions he pulled out of me is just incredible. The character development of the characters is amazing, especially the FL's. I liked the fact that it was 20 episodes because it gave the main leads time to develop their relationship deeper, it did not feel like it was dragging out at all. The OST was pretty good as well. The only complaint I may have is probably the VFX, you'll know when you see it. But other than that, if you want an amazing historical drama with an amazing story that you can lose yourself in, go for it, I highly recommend it. :)