The prison of the Fourth-Dimensional World is located in a crack of void spacetime, surrounded by countless layers of staggered spacetime barriers.
Each layer of the barrier employs the Triple Time technique, infinitely folding time to bind the prisoners' past, present, and future.
The outer perimeter of the prison is also densely covered with the "Infinite Recursion 2.0" version. Any entity that attempts to escape is instantly pulled back to the origin, as if trapped in an eternal loop.
Chapter 465