9b11f552____Final_Fantasy_X_2_Item_List__Location
[Name] Leblanc's Sphere [Description] Left behind by Leblanc's Gang. [Location] 
Leblanc leaves this Sphere at the Celsius after you have given the Awesome Sphere to the Youth League or New Yevon at the start of Chapter 2.
Final Fantasy World - Final Fantasy X-2 Item List
Location