The master alchemist Siegdrad ended the ancient war between gods, humans, and the Demon God by inventing Sealbooks—magical tomes capable of binding monsters. Queen Vitoria unified the continent in the aftermath. Five centuries later, the scholars of the Royal Library of Romulea discovered the Demon God had never actually died in the Otherworld. She had been here the whole time—her seal imperfect. Fried Einhard, a gifted young Libra, assembled the Romulan Royal Library Suppression Team to finish what Siegdrad started. They went down into the dungeon beneath the capital, confronted the Demon God at the open gate to the Otherworld—and lost. The kingdom of Romulea fell to darkness.