Deadman Wonderland is pretty short-lived. I have only ever seen the anime, never the manga, so I don't know if the manga was just as bland.
The biggest problem I had with this anime was the main character. His whining was irritating, but his constant, excruciating screaming was enough to make me want to slam my computer shut. Seriously. I watched this show in English I think, and maybe it was just the english voice actor, but man, oh, man. Terrible.
The storyline was honestly whatever. That's the only word I can use to describe it. It was nothing special. I wouldn't recommend this to anyone, but hey, to each his own.