World coordinates, the other side of the passage: a special world, completely different from the Pokémon World.
How many worlds the phantom of Mewtwo had actually visited, and how many years had passed while wandering the Boundary Sea—only he knew. The number was certainly not small.
The fact that he even evaluated the world before him as "special" and used it as his most crucial experimental ground was enough to show that this world was extraordinary.
Chapter 312