Kayo Matsuo
A Shogun who grew paranoid as he became senile sent his ninjas to kill his samurai. They failed but did kill the samurai’s wife. The samurai swore to avenge the death of his wife and roams the countryside with his toddler son in search of vengeance.
In the second film of the Lone Wolf and Cub series, Ogami Itto battles a group of female ninja in the employ of the Yagyu clan and must assassinate a traitor who plans to sell his clan’s secrets to the Shogunate.
A high-school vigilante protects his community from the extortions of mobsters from a neighbouring city.