Rather than a horror movie, it felt much more like a superhero origin story with a religious twist, and I loved every second of it. It was extremely entertaining, the effects were nice, and so were the fighting scenes. The acting was believable. Except for a bit of a false advertisement (the trailers made it seem like more of a horror than action movie), I'd say this is a solid film.

The best part was definitely Park Yong Hoo's character and how amazingly unimpressed he was about all the crazy stuff happening around him. I chuckled a few times simply because of his reactions, or rather lack of it. He was a rather well written hero, who struggled with accepting his true calling. As I said, it sounds like a superhero origin.

Since I myself don't believe in any of the things presented in the movie (hi there all the atheists) I cannot rate how scary this movie was, coz for me it was not at all. That said, I've been watching horror movies since I was around 6 years old, so it's not easy to scare me anymore.

All the characters were nicely done, we got a believable main villain (in terms of his motivations), the side stories and characters fitted the overall tone of the movie. It was a consistent storytelling without any plot holes and unexplained storylines. The ending felt a bit like a final boss fight in a video game, but that was fitting with how "superhero versus the villain" the whole movie was.

It's obvious how high the production value was. The shots were extremely aesthetically pleasing, the background music was fitting, the set design was amazing (the last scenes in the club: loved them). I also want to thank the demon for not ruining Do Hwan's face close to the end of the movie. He knows the true beauty and how to appreciate that.

Overall, really enjoyable. I might rewatch some scenes with Park Yong Hoo from time to time, since as of today, he is my favorite "horror" movie character.