A sudden and strange disease swept the world, and those who survived found that they could gain power beyond ordinary people's cognition through their subconscious... It was like opening Pandora's box, showing the world the madness of the human brain!
In order to allow normal people and autonomous hypothetical people to survive, some of them desperately established a safe zone. In order to preserve the safe zone, all safe zone representatives finally launched the "imaginary border" plan.
Ps: It's a bit slow to catch on (I just opened a new book, this one is waiting for major changes. It will be updated from time to time)