Windmill = 2
Regen Ring = 1
Force Armlet = 1
Energy Crystal = 2
Make sure you have this items, then make sure you have obtained every Weapons Monthly magazine. If you have every magazine then you’re fine, if not, find all the others, especially the August edition I think, because it contains access to remodel Rinoa’s weapon to its ultimate form.
By the way, you can get Force Armlet from Ochu and Malboro. Or the battle
with the Sorceress on the second time and you win it by luck or at the Esthar pet shop.