Throughout Edo many fi ends walk the shadows brought about by twilight but few truly understand their origins. What are the Youi and where do they come from? With the sudden appearance of these beasts at the recent construction projects within the Inba swamp an answer to this question is realized. Using Atl's powers the Western One's begin their campaign against the Shogunate and the Emporer himself. Yukiatsu must once again trust in the power of the Other World and assume his draconic form to defend a government that has viewed the Ayashi as little more than a band of vagrants. A battle rages in the skies over Japan as two great beasts attempt to wrest the fate of the nation from each other's dire claws, but just as victory seems apparent one of the Ayashi steps forward, sword drawn and prepared to betray his friends. With this traitor's attack are the Ayashi defeated and what of the fate of the nation.