The Ashen Sky Era

(An alternate-history parallel world, post-apocalyptic survival. Please spare my life. If anything violates the rules, just let me know and I'll fix it.) The Sea of Sand Alliance bombed the Western Federation, and the Western Federation sent Earth straight to hell. Years later, no one on the wasteland asked “why” anymore. Just staying alive took all the strength they had. A secret dating back tens of thousands of years was unearthed on the wasteland. Every faction wanted to bury it, so they could keep it for themselves. But a secret is like radiation: the harder you try to contain it, the deeper it seeps into your bones. Humanity thought it was a treasure. But they didn't know some things should never be dug up…