First at all, I was delighted with the graphics. They are very cool, and well done. The animation is very clear, many scenes were dark but this just add more mystery and thrill, just what this anime is. There are many abstrac obscure scenes and in this time, you're not going to see many bloody scenes, however, routine scenes are intriguing, too. I like the character design but I think is kind of little cliche, both of the main characters remind of the main characters of Tsukihime, although the personality of the main female characters are really different.
Another thing I liked was the soundtracks. They are really nice and they complement the scenes and mix with them very well. They just give you more occult and mystery senses and a little bit of sadness and doubt of many things. Well, I really like Yuki Kajiura songs and this anime is perfect for her songs.
About the story, this chapter explain a lot than the others chapters. As I said, there aren't many bloody scenes or too much action as the third one, but this complement the other three previous chapters and you are going to understand a lot of things, but obviously, not everything (If you understand everything, then this anime would have never been classify as mystery). I like this anime doesn't follow the traditional linear chronological order, maybe it is a little confusing, but this chapter is going to clear up many concepts and ideas.
To conclude, if you like mystery, thriller, psichological plots and obscure gore things, also you like supernatural things like ghost and souls and you had seen the other chapter and you don't understand it very much, I really recommend you to watch this anime.
