Kimihiro Watanuki is haunted by visions of ghosts and spirits. He seeks help from a mysterious woman named Yuko, who claims she can help. However, Watanuki must work for Yuko in order to pay for her aid. Soon...

Hidden within the rural countryside lies the mysterious treasure of the ancient Ainu people. A few people know of it and hold the keys to unlocking it, but only Kotan, a child of Ainu descent, is the chosen one...

Rumors stir throughout the land: when the wielder of the black sword draws his dark blade, all who stand in its path are torn asunder. Köinzell, the mysterious young boy who carries the black sword, undeniably...