This anime is one of the best i've watched so far, it shows how cruel we can be when it comes to survival. The vampires needed blood to survive, so they had no choice but to attack the villagers. The humans wanted to survive too, that's why they've been hunting down those vamps. It's a really heartbreaking anime, although it's about vampires, this anime was unique in it's own way. The vampires had feelings too and were trying to ssurvive, if only the humans and vampires made a deal, like maybe the humans could give out some blood every week or something. But the humans and vampires feared each other so much that they resort to killing each other.