In the 8th year of the Eiroku era, in a world at the height of warfare, Takeru and his grandfather, a migrant caster Kiami, continued their journey. Takeru wears the "Juhachiban mask" and the "Kusanagi no Maru" that "lives" on the "spirit" of things that do not exist in this world. In their path, a raging demon awaits them...