This has got to be one of the greatest Manhwas that I've ever had the pleasure to read. The art was amazing throughout the story, evolving along with the story and improving alongside the author. The story is something that many people seem to find overly complicated or bad. Personally I found the story to be extremely deep and well written, when reading there were a few authors notes you had to keep in mind, like how none of the characters had anything to do with their Norse mythological counter parts.
Anyone who enjoys a deep emotional manga/manhwa would probably enjoy the first part of this story, and if your more of an action addict then the second half will be a perfect next fix.