Year 2500 of the Elemental Calendar. Demonic beasts appeared on Bibo Star for the first time. In July of Year 2640, humanity discovered for the first time that the energy from demonic beast elemental crystals could be harnessed by setting them into equipment. In August of Year 2640, widespread disasters struck Bibo Star. Blazing daytime heat scorched the land, while fire from the sky, earthquakes, tornadoes, and floods came one after another.
