This is one of the greatest animes ever created. Everything about it was great. It had depth and great characters. I liked Kiba's determination. Probably the best character in the show, however, is Tsume. The conflicts he had in his past really really make him what he is. His relationship with Toboe is one of the important aspects to him.
The ending was brilliant. I won't disclose much about it, but after I watched it, it raises the question of whether or not there really is such a thing as paradise. After all, Darcia himself says that the world can't be perfect for long due to the evil in it.
Like I said, one of the best animes ever made. It is, in my opinion, worthy of literary analysis.