9b11f552____Final_Fantasy_X_2_Item_List__Location
[Name] Twilight Rain [Description] Enables Floral Fallal to learn Break Damage Limit. [Location] 
Enter the Cave of the Stolen Fayth in the Calm Lands Gorge in Chapter 5, and go all the way to the inner chamber where Yojimbo's Fayth resides. At the back there should be a chest, open it to receive Twilight Rain.
Final Fantasy World - Final Fantasy X-2 Item List
Location