Ancient Girl's Frame

By the late 21st century, humanity has unlocked a revolutionary energy source called "DG energy" ("divine grace energy"),transforming Earth’s economy and enabling space colonization. But when the first expedition reaches Pluto, they encounter a colossal, hostile life-form called the "Nergal." To counter this threat, the Earth Alliance Army deploys the "AG Unit," ancient robotic weapons called the "G's Frame," unearthed from archaeological sites worldwide. Only select girls with unique traits-dubbed "Ancient Girls"-can pilot these machines against the Nergal. The first AG Unit suffers devastating losses in the Jupiter Trojan campaign, and Unit 04’s pilot, Minamiya Reiu, vanishes without a trace. Years later, Reiu’s younger sister, Minamiya Reika, joins the AG Unit to find her missing sibling and defend Earth from the Nergal. What follows is a tale of camaraderie, ancient war machines, and brutal battles for survival.