The Plot
Ganta Igarashi has been convicted of a crime that he hasn't committed, and sent to a new, privately owned and operated prison, where the inmates are the main attraction in a modern day twist to the gladiatorial coliseums of ancient times. Throw in a healthy dose of weird little girl, some new-found super powers, and a little conspiracy theory, and you have Deadman Wonderland.

I've been reading deadman wonderland for a few months now a few more details are Ganta is only 16 and the crime he's accused of is the murder of his entire class he's blamed for only because he is the only survivor . He realizes that he can manipulate his blood as a weapon but he's not the only one .