Slaughtering Beasts from Ancient Times

It was a long, long time ago, when the land was divided into nine states and all over the world. Wild beasts tear apart the sky and the earth, the gods and humans are no more than ants, and the mortals bleed for them. How did we survive? How can the sky be preserved? How can Kyushu be complete? In troubled times, legends will always appear to turn the tide and save the world from fire and water.