That Asian land place we were going to play in with John might or might not be part of Joval. Pretty much up to John of course.
If it is then its going to remain up to John what's going on there and what interaction, if any, it has with the rest of the world. However, it also doesn't stop anyone else from making their own Asian theme continent/island/peninsula/anything you want.
But before you have Hisuno interact with any other civilizations in Joval just discuss that with us John.