Sparked by scientific experiments gone awry,
civilization had collapsed in the future world
and most regions had regressed to the tribal level.
The incident also caused irreversible mutations in people,
splitting them into two species: those with mechanical integrations called Machines, and those who had animal genes, Beast Spirits. As a Machine, Black-Eyed Rock roamed the path between the two races, in search of the answers to this world and fighting for everyone’s beliefs!