As of the time of this writing,Final Fantasy 7 RemakeandRebirthhavent offered such obvious narrative explanations.
Unfortunately, theFinal Fantasy 7 Remaketeam hasnt yet stepped in and settled this debate once and for all.
As for how it will play out, of course, we want players to see for themselves.
Until we have that information, any seemingly definitive takes on this matter should be treated as speculation.
Would we have it any other way?
