I really enjoy the original source. Many kind of mysterst is revealed one by one as Kaname grow stronger after every trial he's done. I don't know at what arc anime will stop but i thought it will end after MC fight ***. All episode have average quality and stable. not have improvement or get worse. Well, it's still in watchable stage for me and story is pretty good, not rushed or the like. you can follow my blog in has-mag.com if you want my full opinion but it's in Indonesia, i don't have plan to make english version of my blog