Sennen Sensou Aigis: Gekka no Hanayome
千年戦争アイギス 月下の花嫁
After the goddess Aigis ended the long war between humans and demons, the prince of Logres, a descendant of the hero, lived in peace. One day, his fiancée, Princess Kaguya from the east, arrived to visit. Before they could address their upcoming marriage, demons attacked, and the royal capital fell to their power. The prince and his companions managed to flee with Kaguya and resolved to reclaim the city.