A must watch. Beautiful story telling, great locales, excellent acting. Edge of the seat drama. Hope they can keep this up. I never ever watch on air shows as my one experience was a huge dissappointment plus I hate waiting. This one is worth it.
If I had any quibble, it would be about the personality of Jee Su; a female lead seems a bit lame. She seems to cry too much and though I think the intention of the writer was to show her as innocent, kind and compassionate, it was never really made clear as to what made her suddenly decide to care about him; the transition was too abruput. But their relationship is beautiful once you accept that it exists however they arrived at that state.
The fights are gorgeous, and the story wonderful. And what do I say about the always talented Mr Kim Tae Pyung?

Spoiler ahead

His portrayal of an ambitious, slightly wolfish, tough business man who is then transformed into a hunted man, consumed by his fight with NPC s that only he can see, and the wits he uses while the world refuses to understand - absolutely on point.