I just found this anime and I've been blown away by it. The artwork is amazing. The darkness occasionally obscures your vision adding to the sublime mood of the story. At times the characters become transparent, revealing their inner anatomy. Also, the scene transitions are exceptional. It is a relief to watch an anime without overly innocent, bubbly, comical, high school characters. So far I haven't seen any Japanese people with blond, red, or blue hair, wearing the same ridiculous costumes everyday. I enjoy the slower progression of the story it allows you to appreciate the mood and suspense of the scenes. I especially like the sinister nature of all the characters. It definitely has a darker, gothic nature about it.