FFX-2 SPOILERS?
The character Shinra from Final Fantasy X-2 proposes the concept of extracting the life energy from within the planet Spira. Nojima has stated that Shinra and his proposal are a deliberate nod to the Shinra Company, and that he envisioned the events of Final Fantasy X-2 as a prequel to those in Final Fantasy VII.
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That's pretty cool.
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