It’s not. In fact you know how this kind of patent gets invalidated, by pointing out what’s know as prior art. Things that did “this” before that patent was filed. So Palworlds and any other game that involves capturing a creature. This “killer patent” won’t stand up in Court unless the Japanese Court is entirely different than the US and German Courts.
The problem is that this has been said since I was in high school and I’m 40. I doubt it will happen in the way we think. It will be some kind of plasma gel instead of humans.