Seriously, why didn't anyone notice this before? The red star is right outside Azala's throne room, just like it's right outside Ulti's throne room, and both of the stars are seen right before the last boss fight with that character! Rinoa isn't Ultimecia, Azala is Ultimecia! And Ulti's real plan to collapse time was to summon Lavos (who we all know had some time manipulating abilities)!