I'm trying to find the section names (the slot names displayed when you save, like "The day - Prologue" or "1st Day: Recollection of ten years ago-Morning Rebirth") in Japanese. The game scripts are in data.xp3 alright, but I don't know which file they're in.
Some section names like "Vela Gulf" and "Missing Ariadne" the references are lost on me, so I hope searching them in Japanese would help clear things up.