It looked like it would be a normal day for Ganta Igarashi and his classmates—they were preparing to go on a class field trip to a certain prison amusement park called Deadman Wonderland, where the convicts perform dangerous acts for the onlookers' amusement. However, Ganta's life is quickly turned upside down when his whole class gets massacred by a mysterious man in red. Framed for the incident and sentenced to death, Ganta is sent to the very jail he was supposed to visit. But Ganta's nightmare is only just beginning. The young protagonist is thrown into a world of sadistic inmates and enigmatic powers, to live in constant fear of the lethal collar placed around his neck that is slowed only by winning in the prison's deathly games. Ganta must bet his life to survive in a ruthless place where it isn't always easy to tell friend from foe, all while trying to find the mysterious Red Man and clear his name, in Deadman Wonderland.

Madness and unawakening sleep, Randolph syndrome. This new illness is slowly but steadily approaching humanity, caused by the huge underground world Asylum that appeared in Antarctica. There are strange creatures different from the earth, and unknown resources. People bet their lives on the depths of the mysterious new world to get huge wealth, organizational plots, or their own ambitions. And here alone, a young man with a wish in his heart is trying to challenge the front line of Asylum. (Source: MAL News)

Far in the future, the lifeforms known as Gadoll suddenly arose as a threat to humanity. The last surviving humans on Earth confine themselves to the Tank, a lower district in the giant mobile fortress Deca-Dence. While the Gears who live on the upper floors are warriors who go out to fight as part of the Power, most Tankers are content to provide support from the backlines, butchering Gadoll meat and reinforcing defenses. Natsume is among those who would rather go to the front lines; undeterred by her prosthetic right arm, she seeks to join the small number of Tanker soldiers who join the Gears in combat. But despite her peers at the orphanage each receiving their work assignments, Natsume’s enlistment to the Power remains unapproved. In the meantime, she begins a job as a cleaner in an armor repair team led by the hard-nosed and apathetic Kaburagi, who seems to be more than he lets on. Though initially cold to his idealistic subordinate, he soon recognizes in her the potential to upset the status quo of the world. As Natsume’s new mentor, Kaburagi prepares her for the special and unique role as a game-changing bug in the system.

Set in the year 2100 where the world is tied together by a computer network. The children of the world become Web Divers, adapting their consciousnesses into data, and love to play together in the cyber park called Magical Gate. However, a mysterious computer virus appears beginning to destroy Magical Gate from the inside out. In cyberspace, programs called Web Knights have been created to protect the children. But, the computer virus has turned all the Web Knights against the children. The only Web Knight to escape the brainwashing is Gladion. Gladion seeks the help of Kaito Yuki, a Web Diver who is in the fourth grade. (Source: ANN)