LATIN LETTERS is NOT pokemon world LETTERS
UNOWN came from ANOTHER DIMENSION.

MULTIVERSE EXIST ULTRAWORMHOLE EXIST PORYGON Z is a pokemon used as a drone for exploring dimension SO EVEN MODERN DAYS POKEMON AND ULTRABEAST can BE in ANCIENT SINNOH

CYRUS ORIGINAL PLAN as we can read in his HQ is to use the force of ARCEUS

CYRUS ALREADY KNOW that pokeballs dont work on arceus because are a limit for his potential

RUINS in in sinnoh are from an more ancient civilization more near to the gods and similar in every region(greek roman architecture with triangle shape)