Despair War is a conflict between antique and modern firearms. The planet was annihilated as a result of a nuclear war. People are living with their independence stripped away under the complete supervision of a global empire. Despite the illegal law of having any weapons, there is a covert resistance fighting against the world empire. They have old guns that have been left as a work of art and use them to combat. The Kijuushi then emerge as the souls of the antique firearms. The "Absolute Royal," proud and glorious, are the only ones who can offer this planet hope. The narrative illustrates the Kijuushi's daily lives. Laughter, sorrow, delight, bewilderment, and suffering; they would still follow their own entire allegiance to combat. What do they fight for? What should they do?