Deadman Wonderland

From Asaction

So there's this kid named Ganta who is a whiny wuss and nobody cares about him but he gets framed for murdering his classmates and sent to Deadman Wonderland, which is this psycho prison where the inmates are forced to play games where people die and it's an amusement park and the general public doesn't realize how totally wrong it is. And people called Deadmen have hax powarz where their blood does crazy stuff and of course Ganta has a powar too since he's the Shounen Protagonist but nobody really cares about him especially when Senji is so hot and badass and Shiro is kind of fun and unhinged and Makina is a stone cold boss with big boobs.