Currently an idle passerby at Shiramu Inc., Mirror M simply stands on the sidelines without directly getting involved in the conflict that the story focuses on. He only generally shows himself to characters who are new to Shiramu Inc. and have no knowledge of him, and thus one of the first part of their jobs is to be introduced to Mirror M without freaking out. Mirror M's past is rather shady to those who are not aware of how he was created to begin with, and it's very difficult to pinpoint who originally created Mirror M within the logic of the story itself, and as a result, Mirror M is an enigma of a character with a past that cannot properly be explained.