Final Fantasy X-2 : The PERFECT Ending (part I)
This is PART I of Final Fantasy X-2's Perfect Ending. You cannot get this ending only with a 100% game completion. You must complete certain tasks to trigger the scene where Bahamut's fayth offers to bring Tidus back. I was only able to get the 100% and perfect ending by playing a NEW GAME PLUS.
FYI: You CAN get a NEW GAME PLUS with less than 100% if you've played the game well. After the credits, press X and the screen will show you how well you played the game. If it's good enough, it will say that you get a NEW GAME PLUS.
ENJOY!!