One word for this anime for me: HORRIBLE.
The story, i have to admit, is the only thing that i liked from the anime. The Gore was epic, i thank god for the blur and the censors. The mystery is keep hidden until the 11th Episode. The damage caused from the monster to Saya was unusual. Saya should be dead from few fatal slices that should turned her into human fillet, but, as we all know, Saya lives on like Rambo survives a hail of bullets.