This wouldn't be too unreasonable, since it is generally accepted that the reason you can travel from Home to Another at Opassa Beach is that the dimensional veil is either at its thinnest or nonexistent at that point. So, it would make sense that there may be other spots in which the veil is thin.
An interesting thought just popped into my head. Perhaps this is why some NPCs and PCs' dimensional twins seem to lead similar or the same lives, while everyone around them lead drastically different lives because of the split. Perhaps they, themselves, have a very thin dimensional veil, causing little difference to come about. And, then, the ones whose lives have the most difference would logically have thick veils about them. The same would go for areas in which the same monsters roam in both worlds; perhaps these areas are so unaffected that their environment has not changed in the least!
So many such places, then, could exist all throughout the game. I have not finished CC, and what I have played so far was years ago, but I can't recall any specific examples to support this theorem. Maybe someone more experienced can assist.
