Quote Originally Posted by boys from the dwarf
spira is similar but it being the world of FF7 is most likely untrue.it doesnt make any references in the games and just hasnt been proved.
Did you manage to catch Rin in the Rin's Mystery side-quest? If so, you'll see Shinra making direct references to the planet's Life-energy and seeking ways to harness it (Mako/Mako Reactors).