Mantricia city is the final frontier for the pokemon world or is it come here to fight all of the elites fours and champions that ever existed

Inside mantricia city there are
Kanto elite four
Jhoto elite four
hoenn elite four
Sinnoh elite four
League champions
pokemon center
pokemart

To the north is dark cave
to the east is the battle frontier
to the west is lunar city
there is currently nothing south