Den of Woe

You must have collected all 10 of the Crimson Spheres to be able to unlock the door to the Den of Woe.

Ignore the side paths and follow the curving corridor forward until you reach the large square room. There, after a lengthy scene, Yuna must battle alone against Rikku then Paine. After those two battles, the girls will join together to take on Baralai then Gippal and finally, Nooj. There are no breaks between any of the battles.

Winning the battles nets you the Supreme Light grid and another Episode Complete!

Walkthrough: