I've just finished to watch it and I can sincerely say that it wasn't what I was expecting not in a bad way but in a good way. First of all the animé has pretty good theme which is the occult and it's not very common to see it on animes, I'm not a fan of occult or an practician but it sure surprised me a lot the development of the theme. Although that the animé has a pretty good Story, the art itself it's the medium, the Soundtrack was very nice because it was in perfect time and in the perfect moment not that kindof soundtrack's just to fill in.
His characters are very unique although they're a little "freak" the situations can be pretty mysterious or very funny despite the existence of a little ecchi but just in one or two episodes.
In the general I think it's a good animé to watch and in the end you will be sorry because it has just 13 episodes.