Sengoku Youko.

Humans and katawara are at war, but there are those on each side who join forces. Tama is a fox spirit who loves humans, while her sendou brother, Jinka, despises them. Together, they use the power of spirit transformation to defeat the monstrous katawara and put an end to the evils of this chaotic age. What destiny awaits the duo at the end of their journey?