Relic Armor Legaciam

Professor Grace and his granddaughter Alcia live on the planet Libertia, which was once notorious for its extreme environments, but was transformed by humanity into a habitable land through the creation of three giant mirrors. Alcia has been testing a special mecha called Legaciam, which is equipped with armor that can withstand extreme heat, allowing it to operate in areas that would be uninhabitable for humans. Guild soldiers attack the planet in search of Professor Grace and Legaciam, and Alcia barely escapes while piloting the mecha.