Characters are well developed, there are lots of plot twists throughout the series, and it's generally a really good show. The main villains are also nothing like you'd expect and the lore gets deeper as you watch further into the anime. The ending is nice too. It's not too bloody, although there is some, and the only nudity is of a woman in a couple episodes, and kind of Nemo in the final episode and it's obvious when it's coming up. Really good, clean show, which I appreciate.
