This is why you do european FFX, always.
"Look! It's Valefor! But with a badass attitude"
*Zanmato*
*crappy loot*
*reset console*
Repeat for every one of them. I seriously spent weeks on this. But you eventually get all the Genji stuff, and other similarly amazing gear which lets you plow through the sphere grid near-instantly. But Omega Ruins is the best if you don't have that stuff
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http://i.imgur.com/1fvTA.gif