This is the story of the Successor, tasked with saving the world Geas, weapons with the power to destroy the Barbaroi menace and Resonants, the Geas' chosen partners.
The protagonist Noir, in his struggle against the Barbaroi learns of gestalt shift — the power that binds Geas with Resonant and that as Successor, his destiny is bound to those chosen to be Geas.
Though he knows his decisions can alter the course of history Noir must hold his chosen sword high and march toward victory for that is the burden of the Successor — to save the entire world.
