Juu Henkei

Juu Henkei (獣変形 juu henkei literally meaning "Beast Transformation") or Beast Transformation is a kettou jouken belonging to the Inugama bloodline that allows the user to transform parts of their body into those of a beast that they most connect with. The resulting juu henkei transformation depends on the Tao capacity of the user, allowing the strongest to sometimes transform their entire bodies.