I have to admit that the acting was so good and pleasing, I really have to give it to Ahn Sung Ki! Park Seo Joon had some hot scenes and was gorgeos as always ^^
However, I was mostly disappointed by the "development" of both the characters and the story. For example, the bad guy didn't have any backstory or that much screentime as he schould have, it felt like they were fighting just another regular demon... The storyline was very rushed to the point where I was thinking "Why are they acting like this all of a sudden?", although it had a great potential and if it was made into a drama, it would've done so much better for sure. The hype aroung this movie was huge but after watching it I don't think I'll give it a second shot, it's just not worth it in my opinion.