I have just finished the anime Deadman Wonderland.
Imagine, a private own prison, this prison is not like any state prison. It is an amusement park. The inmates participate in different shows shown to the public to earn their living inside the prison walls. But the story is not as joyful as it may seem, if that is how you look at it. There is something else going on. Prepare to be disgusted yet still amazed at the raw scenes.
I sat curled up on a chair during the whole show. The only thing saving me from painful nightmares is the fact that it is made up. It is still a very raw anime, it is the worst I have ever seen, yet one of the best. I really think you should be at least 18 years old before watching this anime, at least!
If you want to read more about the anime click HERE.