If you liked the Deadman Wonderland anime, the Anime-Planet community thinks you'd like:
Ten years have passed since the demise of the bubble economy, a time that polarized the world into two groups of people: the rich and the poor. In the present day, Saiga Tatsumi (a former war photographer) has been hired to investigate a secret club for the rich named the Roppongi Club, but he soon discovers secrets much darker than he’d ever imagined. With the help of a exploited goddess named Kagura, Saiga now possesses the power to kill by simply taking a photograph; but can he stay alive long enough to save her from her captors?
Both Deadman Wonderland and Speed Grapher at very similar for many reasons. The main characters in their respective series are forced to fight or flight and are infused with special powers which they use to protect/save their friends/love interests. There are provocative scenes, character deaths, and lots of gore. If you're interested in more mature types of anime then these are for you.
Also there are characters that use their blood as weapons in both anime :) If you liked one I'm sure you'll love the other.
Ranmaru is young cop with a dark past. As one of the few survivors of a mindless slaughter in his apartment block, he joins a special unit called TOKKI to avenge his parents. On his first case, the already ghastly murder scene turns to one of terror, as the inhuman killers start to massacre the police. After being saved at the last minute by a secret unit named TOKKO who wield swords instead of guns, Ranmaru's mind is filled with questions and he is determined to find out the answers, no matter what it takes. What are these monsters, and why did they recognize him?
If you want dark gritty and always wondering what the hell is going on this anime is for you. Deadman would be better dubbed if it wasn't by funimation the voice acting would most likely be better and the swears wouldn't be bleeps. Nothing fucks up a anime like bleeps in the dialog,but I digress. Both Tokko and Deadman's main characters are granted power beyond what they understand and are tossed into a world they are shocked to be in. The mood is close as well. dark and disterbing with a touch of hopeless at times. Tokko was in my top 10 before and deadman has just earned a spot. But don't take my word that they are good watch them and find out only 12 and 13 episodes each so worst case you killed a afternoon.
Akiyuki lives on post-war Sentan Island, always rushing between the demands of his separated parents and his friends at school. But his carefree days come abruptly to an end when his school bus suffers an explosion, the first attack to plunge Sentan back into war. Akiyuki lives to find himself turned into a Xam'd, a mysterious creature, by the suspected cause of the explosion. Engulfed by Xam'd, Akiyuki is eventually saved by a red-haired girl, Nakiami, only to find himself torn away from those he loves. Now he must work to control and understand the creature within him, all while searching for his family and friends in a world steeped in the secrets and chaos of war.
Yusuke Urameshi was a normal middle school punk until he was hit and killed by a car, while saving a child. His selfless action earned him the right to gain his life back and serve as a detective of the spirit world, keeping the world of the living safe from a myriad of demons. But being reborn has its price: Yusuke must hatch a spirit beast that will develop according to his actions, and if he doesn't act in a good and honest manner, it will eat his soul. Can Yusuke protect the human and spirit worlds and still manage to save himself in the process?
If you like the tournament format and characters beating the stuffing out of each other with cool super powered abilities, and a lot of the time with their bare fists too, then Yu Yu Hakusho and Deadman Wonderland are just for you.
Jin is an energetic young boy living in a shanty town and making ends meet by performing good deeds for money. However, when his mentor dies during a fight with a strange monster he finally learns the meaning of death. Having been taken in by a stripper named Akemi whom he once saved, Jin begins to live a quiet and normal life - though in reality he is anything but ordinary. With superhuman abilities and a group of mysterious men searching for him under the name of Zet, over the years Jin finds himself drawn into a world of creatures with dangerous powers called "Players". But what is Jin really, and with his vicious methods of defeating these threats, is he really a hero for justice or simply another dangerous monster?
These two animes have similar basic themes. Both have superhuman characters that fight a secret war mainly for the enjoyment of the rich. Survival is key. Though Deadman is showed in a prison, Zetman displays what happens when superhumans get loose. Great show. Tons of action, and gore.