It's a slow paced, well built story that focuses a lot on the journey of the main character - Rentt Faina - as he figures out the whole undead thing. It still has a bit of a game-ish aspect to it with the idea of him killing monsters to make himself more powerful, but this, at least, is handled better than a good number of other series.
And without delving too deeply into spoilers, I think it presents it's big, world spanning mystery pretty well. It establishes that there are a lot of unknowns, and that there's plenty to be explored in the world - which is a good thing for a series like this.
To make a lot of boring meandering and rambling on my part short, it's a solid fantasy anime that does a good job establishing and building it's world.
The one con I can mention is that the series can feel really slow at times. All it really means is that it doesn't have the highest highs, but focuses really intently on the main character.
Having finished the anime now, I wanted to add a few notes. there are several elements that are either cut for the sake of pacing, or taken out of order for the sake of character development. There are technically elements that shouldnt even be in this season because they're featured in other arcs. This gives me the unfortunate sense that they aren't likely to do a second season
