Red Sky Continent.In this land full of prosperity, the human race is now facing extinction against a powerful enemy - the Yokai race.The last humans were able to obtain a truce after many battles, but for how long can this period of peace continue?Read the chronicles of Souma, a young onmyoji who will end up being caught in this massive conflict.Will he be able to save the human race or will he perish alongside all the other humans?