Regalia: The Three Sacred Stars - S01

In the kingdom of Rimgarde, two mysterious giant robots begin a duel that wipes out nearly all human life before they vanish. Twelve years later, the young empress of Enastoria, Yuinshiel Asteria, works tirelessly to keep both her authority and the support of her people. But the peace of Enastoria is threatened when survivors of Rimgarde arrive. Armed with giant robots called Regalia Gear, they search for Yuinshiel's adopted sister, Rena. She is forced to reveal that she is not only a Regalia Gear wielder but a true "Regalia," a human who can transform into a giant robot, and the one responsible for the fall of Rimgarde. Suddenly pulled into an international conflict, Yuinshiel must protect her country while also shielding Rena from those who want to exploit her powers. But by fighting for her sister, Yuinshiel risks setting off the same disaster that once destroyed Rimgarde. In this precarious situation, the two girls push their bond to its limits as they fight not only for themselves but for the safety of the world.