Ancient Girl's Frame - S01

By the late 21st century, humanity's discovery of "DG energy" ("divine grace energy") transformed the world's economy and enabled space colonization. But when the first expedition reaches Pluto, they encounter a colossal, unknown life-form called the "Nergal," which attacks without warning. To counter this threat, the Earth Alliance Army revives ancient robotic weapons called the "G's Frame," unearthed from archaeological sites worldwide. Only girls with unique abilities-dubbed "Ancient Girls"-can pilot these machines against the Nergal. The first AG Unit suffers devastating losses during the Jupiter Trojan campaign, and Unit 04's pilot, Minamiya Reiu, vanishes without a trace. Years later, Reiu's younger sister, Reika, joins the AG Unit with two goals: to find her missing sister and to defend Earth from the Nergal. What follows is a tale of bonds, ancient war machines, and brutal battles for survival against an alien enemy.