If you liked the Deadman Wonderland anime, the Anime-Planet community thinks you'd like:
On the eve of nobleman Oz Bezarius's fifteenth birthday, he and his loved ones gather to celebrate in a coming-of-age ceremony. But after Oz steps under a long-stopped clock and the hands finally move once more - thus fulfilling a mysterious prophecy - he is violently thrown into the legendary prison known as the Abyss by three cloaked intruders. Existing in another dimension, the Abyss is home to lifeforms born within its walls known as Chains; these beings can only live in the real world if they make contracts with humans, binding their power to the person's body. However, there's a catch - in time, the human will be overcome by the Chain's power and then thrown into the deepest level of the Abyss. When Oz wakes up in the Abyss he is quickly attacked by hungry Chains, only to be saved by one named Alice - a Chain who appeared just before he was thrown into the prison. Together, the two make a contract and return to the real world, where they are enlisted into the Pandora organization - a group researching both the Abyss and the trio that threw Oz into it. Along with members of Pandora, the duo searches to find Alice's lost memory fragments that are scattered throughout the world, to discover the secrets of the Abyss, and to determine if there's a way their contract can be broken without killing either Oz or Alice.
Super depressing and sinisterly dark first episode--both Pandora Hearts and Deadman Wonderland have this.
On their respective first episodes, the main character recieves unfit judgment, and this in turn induces overflowing confusion such that the audience would almost give up hope for the protagonist. This almost made me give up both series.
Indeed, the world is against both main characters, but as their stories progress, they both acquire the courage to fight back against the cruel destinies forced unto them.
Conspiracies, deception, the face of the cruel and sinister reality. If you like heavy darkness, you'll love both Pandora Hearts and Deadman Wonderland!
Abandon all hope...and live anew.
A young man awakens in an abandoned warehouse with no memory of his past. As he leaves the room and ventures further into the warehouse he is attacked by a girl in a mask; she tells him that in order to live he must come at her with all his might. After a fight for his life, he manages to overpower the girl, learning that he is to be trained as a Phantom - an assassin for the Inferno organization. He is also given a new name: Zwei. For three months, Zwei is trained by the girl in the arts of assassination until he has just one final test: to kill a living human being.
Without focusing on gore, sex or supernatural horror, these both Phantom ~Requiem for the Phantom~ and Deadman Wonderland put an average human being into an unspeakable world of darkness where only their inner will to survive prevails.
While visiting her grandparents on a remote island, Shiina Tamai, our young protagonist, inadvertently finds a strange star shaped creature, which she names Hoshimaru. This creature, while seemingly harmless and unusual, holds many secrets. As Shiina and her new friend Akira soon find out, their creatures are much more than they seem to be...and against their will, they are thrown into a dangerous and hostile situation of trying to save the world from others who would use their dragonets to enslave it.
Both Deadman Wonderland and Shadow Star Narutaru focus on what happens when people receive supernatural powers they should never have received, and what happens when people try to exploit each other utilizing these powers. Told through the perspective of coming-to-age, Deadman Wonderland and Shadow Star Narutaru explore how adolescents must struggle in a world where adults left them behind.
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.
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.