Memory Fragment (記憶の欠片 Kioku no Kakera) is a crystallized fragment of someone’s memories. If a person possesses one of these fragments while moving to a lower level of the Phantom Field, they can view the memory encased within it.
“Me” collects these Fragments in XBlaze – Lost: Memories to get to the lowest level of Field and find her little sister.
The player has to collect all of the Fragments for “Me” to go back to the Phantom Field and help “Nobody” to return to her own world.