One of the few anime that consist some of the gore but romance and all, it one of the few anime that I might accept as one of the few anime that shown some sense of morality. The thing that I actually give the credit was, the fact that there were good ending (or harem ending) that based on the eroge itself, the main theme of the bad ending seemly brought up my attention. I too found that in the end of the anime, it give lessons instead give giving horror oly to the viewers.
Bottom line is, this anime that actually reflects the real life problems that found among to our realistic society. Feeling disgust of the act due to blind love may seemly just mere appeal. Talking about how sometimes, being harem not often good as it seemed to be if reality checked. And the love problems often, if not worst enough, happened in among our society everyday as if solutions not found, the scenario is just similar to the virtual. (Truth: If case you just talking just being a fan, you should pay attention on the lessons that jealously sometime be violent if overrated)
I would give 5/7 for the anime since it still has a part of morale lessons for us, piratically for the young guys who wonder how is love it is.