LogFAQs > #949806867

There's a couple other things you can do besides that, I don't think you've done yet (unless I overlooked them or you didn't mention them). I'll spoiler them, but they're just vague clues to point you in the right direction.

There's a location on the world map you haven't been to yet. It's rather secretive as it doesn't have a dot on the map and isn't immediately obvious it's a location you can enter. More specific: It's in the north, look for a bit of an odd looking formation.

And an esper in a location you've already been (you didn't miss it, it wasn't available at the time you were last there). More specific: Somewhere you were at early on in the World of Ruin.

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Change is weird.