Memory Manipulation

Summary
The ability to influence memory. Can be carried out using empathic, mental, biological, electrical or data manipulation. Furthermore the memory can be comprehended and controlled in other ways (e.g., by magic).

Types

 * Empathic manipulation - Affecting memory through emotions. Usually very limited and allows user to erase or distort existing memories only.
 * Mental manipulation - Affecting memory through the consciousness/mind. Allows managing memory in a variety of ways (comprehending, modifying, deleting existing memories, as well as creating new memories). This also includes modification of memory by controlling the electrochemical signals of the brain.
 * Biochemical manipulation - Affecting memory through brain cells, making it possible to manage memory. Allows managing memory in a variety of ways (comprehending, modifying, deleting existing memories, as well as creating new memories).
 * Information manipulation - In this case, the memory acts as a regular array of information. It can be accessed in a manner similar to accessing the hard drive of a computer.

Users

 * Nanami Tokou (Gokukoku no Brynhildr)
 * La (True Remembrance)
 * Mest Gryder (Fairy Tail)
 * Ragyo Kiryuin (Kill la Kill)