All you need to make a hit drama is good writing, great acting, and excellent production values. It helps if the music is good or at least not annoying. This drama ticks all the boxes, so much so that a person like me who fundamentally dislikes action dramas can find this to be the best offering so far this year. I looked forward to every episode and was never disappointed.
Yes, the premise is silly, as are all the demon hunter dramas. But the characters were so engaging - even the villains - that it was impossible to avoid getting caught up into who they were, what was happening to them and what they would do next. There were several touching stories about loss and love wrapped up in it, as well as friendship and redemption. It has everything you want in a drama - and maybe more bloodshed and violence, but that goes with the territory. Literally, if you've watched it and know what the territory is! This isn't for the faint of heart, and I'd exercise parental controls over younger kids. But it was a great ride.