this world embraces various miraculous beings. the nine countries sharing this world stand on the land, seabed and even in the sky, with each one featuring its own characteristics. humans, yokais and celestial beings coexist here. however, for some reasons, the balance among the three was thrown off, and yokais, with their power multiplied, are attempting to take over this world. the appearance of our hero song will bring significant influence to this world, yet he has a long way to go.