Legend tells of a WEAPON MASTER who could master every weapon. In his hands, even a simple tree branch could become deadly. Armed with nothing but a single pencil, he could still fight his way out of the battlefield.
He does not merely use weapons - he himself is a weapon, capable of drawing out their ultimate potential.
One day, an amnesiac boy wanders into the forest where the next WEAPON MASTER is chosen.
Faced with relentless masters of countless weapons who attack without mercy, what fate awaits the boy?