Today, District 91 no longer sends scientists and federal soldiers into the cracks of time and space, but allows death row inmates in prisons around the world to perform this dangerous work. Before these prisoners enter the crack, they will be told a beautiful fairy tale.
If they successfully return from the rift in time and space, then he will be pardoned by the Federation, exempted from death penalty and labor, and start living with a new identity. Of course, starting a new life in the hospital bed as a vegetative!
The entire 91 area is half buried underground and is a large building with a niche-like structure. The box-shaped top of the niche-style building is just connected to the spherical area where the explosion occurred hundreds of years ago.
The diameter of this spherical area
