-Nods- I mean... we call it a parasite, because it's the closest we can really get to having a name for it. It's... old. Really old. Could look like anything, so it pretended to be lost loved ones, friends, family.
It'd been eating planets and stars since who knows when. Back in the day, we used to think there wasn't any alien life out there. Now we think there could've been, but we'll never know. Anything that was out there is long dead, or worse. Who knows? Maybe there was an Earth in my universe, and She found it before they found us.
We killed it. Tifa and Barret and Yuffie and... some others. Aeris probably did most of the work.
Fire helps. Keeps it from healing itself. What you really need is Holy — not just to destroy the matter, but the... -Gestures- its soul? She didn't really have a soul. Which I know sounds weird, since She was alive, but she wasn't alive either. -Realises he's talking complete gibberish and shuts himself up- The Planet can purge it too, but not very well, or easily.
It's hard to kill something like that entirely, though. I should'a offed myself years ago, but... -Scratches his neck- I'm working through it now, I guess. It's hard sometimes.
Well... no. It's what She ate. Planets, stars, people...
...I don't really know how it existed. Nobody does. You need a soul to be alive, and do magic. It — it's something else. Beyond anything we can understand. Imagine... imagine someone walking around with their throat cut and their heart torn out of their chest, just fine. It's — -Shakes his head- I don't understand it.
-Looks at her and actually registers he's been upsetting her- Are you okay?

"Uhhhhh...huh..."