Restoring the Map

This is it! A map straight to The Book of Ancient... but it should not be torn. Oh, what a pity this is. I am afraid you will need Memory Powder to piece this together. There is a gentlemen in Cloud Park VI named Corporal Easy of the Alpha Platoon who may be able to provide it for you.

I'm studying these four pieces of Old Piece of Map, but these don't mean a thing unless they are put together! Corporal Easy of Alpha platoon must have found Memory Powder while investigating something around the Orbis Tower. Can you get the item for me, please? Thank you!