Beastman

is a race of sentient human-like animals. They were very rare before the Dark War, and now even much rarer.

The only known beastkins in the series are Mitsuyoshi and his younger brothers, Tomonori and Munefuyu.

The Kaka tribe are genetically engineered clones created from Jūbei's cells.

Beastkins, half-beastkins and demi-humans generally appear to possess excellent physical and sensory capabilities compared to humans, as well as extremely long lifespans – but even these advantages cannot save them from being treated by other people as second-class citizens, and even discriminated against and hated.