Naruto ultimate ninja 4 Shippuden help?

What is Piece of memory and how do I get it, because I was going to the next part of Hero mode and it says sealed...Can someone help me?

Player2009-04-10T13:44:44Z

Favorite Answer

You use it to unlock the stuff in Hero Mode. You go to Master Mode and in the game you find these glowing blue balls those are pieces of memory you use them for Hero Mode.