Quote Originally Posted by SeeDRankLou View Post
Second, I have personally verified by doing a 0.2% event that you do need to beat Trema for the 100% in one game walkthrough. You'll have exactly 96.0% right after you go to do the least events on the Celsius and before you go down to the farplane and finish the game. You need to beat Trema, there are scenes before and after you beat him that are worth percentage.
Wrong. I got 100% way before I beat Trema.

All you need to do is to get to the 20th floor of the dungeon to get the last Crimson Sphere.