Nayutaro is the originator and master of the P.O.W combat arts, which is used by practitioners such as Hyakutaro Ichimonji and the other taros, having used it when bows and swords were used in war. He has lived for very long, although no one is sure as to his secret.

Like all P.O.W practitioners, Nayutaro infiltrates enemy positions by pretending to be a captured prisoner. Being the original founder of the P.O.W arts, Nayutaro is also capable of growing into a muscular opponent despite hiding