Deadman Wonderland (16+)

[Hellequin]

http://en.wikipedia.org/wiki/Deadman_Wonderland
http://somemangas.com/manga/Deadman_Wonderland/

Only a manga right now, but an anime is due out in the Spring, I think. I like it a bit and didn't see a thread about it, so yeah I posted one here. Discuss, and put spoilers, in you know, spoilers, stating the approximate chapter where one would have to read up to to not be spoiled, because I'm not caught up yet.