Zatoichi's Vengeance (1966)

Zatoichi encounters a dying man, who asks the itinerant masseur to deliver a bag of money to his young son; he agrees to fulfill the request, finding the boy in a village terrorized by criminals. This is the first entry to scrutinize the swordsman’s methods, as a blind monk confronts Zatoichi about his violent approach to problem solving and Zatoichi finds the child turning to the same bloodstained path.