Reincarnated as an F-class deserter, a legendary mecha genius is forced into a contract marriage with the fearsome Crimson Valkyrie just to survive. Mocked as a useless freeloader, he will turn scrap metal into god-tier machines of war. When an apocalyptic Zerg swarm threatens to annihilate humanity, this "trash" will forge the ultimate weapon and become the world's last hope! From absolute zero to Mecha God. The ultimate counterattack begins now!
