The Guado are now attacking "home" with fiends and such. Go in and press X on dead bodies to get helpful items. In here, you have some mandatory battles with Guado and 2 to 3 fiends at once. Follow the red arrow until at the Summoner's Sanctum. An really evil place that the Al Bhed made. Then look around for 10,000 gil and other useful items that would be great to have for the sphere grid. Head for the Airship. Before you get on the Airship, Tidus will find out that Yuna is going to die with the Final Summoning. This here, is a crucial and very sad part of the game.
