Deadman Wonderland (Prison)

Deadman Wonderland, often abbreviated as DW, was a privately-run prison located on an island in Tokyo that doubled as an amusement park. It was opened in the year 2017 with the beginning of the Tokyo Recovery Project and is the only fully privately operated prison in Japan.

About
Deadman Wonderland was supposedly built for the revival of Tokyo, pulling a lot of tourists to the prison's special attractions. In reality, its true purpose is the containment of Deadmen, and in particular, to seal the Wretched Egg.

The prison is built on the Mother Goose System, a device created to seal the Wretched Egg's powers. It has six normal wards (labeled A-F) and one special ward (G Ward) for containing Deadmen. The prison has a special system called the "death sentence rule". That is that every prisoner on death row wears a collar that constantly injects poison into their bodies. The only way to avoid being killed by said poison is to eat Candy (an antidote) every three days. However, Candy is very expensive.

History
Deadman Wonderland was built after the Great Tokyo Earthquake with Hagire Rinichirō in control being left in control after taking over Tsunenaga's father's body. The warden was, in fact, sick, and it was the promoter who was pulling the strings. For ten years, Deadman Wonderland sought Deadmen and imprisoned them. The Carnival Corpse was also one of the first events held in the prison.

Hagire's body was defeated by the Wretched Egg which resulted in Tamaki becoming the head warden. In the year 2024, Scar Chain attempted a prison break, though it failed. They later made another successful attempt, but only Karako Koshio and a handful of others escaped. While on the outside, Karako revealed Deadman Wonderland's secrets to the media. Tamaki, needing an excuse for the truth within the prison, depicted the Deadmen as being inhuman animals. Due to this, Tamaki was able to continue his work with the Deadmen. The prison even began broadcast the Carnival Corpses.

Around this time, the Forgeries were introduced. The Chief Guard, Makina discovered Tamaki's plan and attempted a coup d'état. She succeeded with the help of Ganta Igarashi and the other Deadmen. Tamaki commits suicide and the prison was closed for good. Toto Sakigami later surfaces and assumes complete control over Deadman Wonderland. All Deadmen were later retried and the regular prisoners were transferred to another prison. After Makina's explanation, a mission to return to infiltrate Deadman Wonderland was installed though they all perished at the hands of Hagire and the Wretched Egg.

Makina and Karako later establish a plan to return to Deadman Wonderland alongside other Deadmen with the purpose of defeating Hagire and stopping the Wretched Egg. The mission succeeds and Deadman Wonderland was destroyed in a battle between Ganta and Shiro.