Seymour before Anima: Use talk with Tidus so his strength increases. Use any of his overdrives and when Seymour's HP is at 3000 or less he will summon Anima.
Anima: Survive until he does three boosts and then use blitz ace on him and he will die.
Seymour after Anima: Use blitz ace on him and he will take about 10000 damage and he only has 6000.
Chat with our AI personalities
you have to follow the main story until you get the airship and crash into sin and blow of his arms the you blow up his back and then some how ths portal appears and you enter SIN!!! Then just keep following the story until you kill sin and win the game.
you must first go through every other sphere on you grid to use them
just mirror it
use mega blast
you do things