Gruesome it is. Controversial, definitely. Sad for sure.
So far, this is the most intriguing and bloody anime I have seen. However, I liked the concept of the story. There is nudity, there is maturity, some hilarious scenes and also Romance...
The huge impact that it has left me was the unfairness of some people... That's why I think this became popular. Because it deals about inequality. Won't you agree if I say that in our world, there's racism, unfairness and the likes of that. If you're different, you're an outcast. In my opinion, that is what the story all about.