The op song is so catchy. I give a high 7, so I graded an 8.

The first episode ending got me with ∁E�E�ДﾁE kind of face. I was just shocked.
But the screams or groans of pain in the voice actors I find better than I usually hear in anime.

Tenri is now my favorite girl from this anime, just love her.

After the first few episodes the anime becomes difficult to for myself personally.

I quite like it for it's music, characters, story, etc.
The only thing that holds this anime back is the way it displays or shows the story. It seems to be one of those animes that you the viewer figure out whats going on rather the anime narrating everything. Of course cause the anime to be more realistic which to many is a good thing but is difficult to pull off if not done just right. Personally the anime seems to one of those that works best slow paced with a lot of episodes in order for the story to progress nicely.

But I accept it as it is for now since it was adapted from a novel and I can see very well that it would've been much more "smooth" in displaying it's tale. Because novels generally are written so that the reader figures out the story themselves.