Taken from manga: Because I know that humanity will have to wage many wars against evil in the future I am leaving behind the strongest reploid in history... Because this world is currently at peace it is my sincere hope that he will not be forced to embark upon such a battle. However unfortunate as it may be I fear that when the time for war comes, he will have no choice but to become ruler of the world.

Mankind is near extinct due to the rebellion of a slave species that they created. This story follows one of the last humans, Yakumo, as she travels to find Center, hoping to unite the humans living there in peace with the Matrixer.