One is "Earth," where a horrifying last boss fight is taking place. Another is "Bizarro Earth," where it is really similar to Earth, but different ever so slightly.
These two Earths are connected and affect each other in all sorts of ways. Z.H.P. Unlosing Ranger vs. Darkdeath Evilman - Play-Asia.com
Whatever happens on "Earth" happens on "Bizarro Earth." On the other hand, what happens on "Bizarro Earth" can also affect the fate of "Earth" itself.
