The following review is an extract from the book "Shintaro Katsu´s Zatoichi: Complete guide to all movies", which is now available on Amazon.
"(...) Zatoichi agrees to be transported in a jinrikisha (a type of proto-taxi in Japan of the Tokugawa era, and other Asian countries). Persecutors who want to kill the blind man see how he rides the vehicle, as they keep a close watch on him. At the edge of the road, Zatoichi and his carriers meet a woman with a baby who feels unwell. Chivalrously, Zatoichi proposes to the mother to get into the car in his place; he will continue on foot. A few meters ahead, the jinrikisha is attacked, the killers strung the person inside thinking that it is Zatoichi ... and killing instead the young mother (...).
(...) Zatoichi, who feels responsible for the tragedy, decides to take the baby to the town of Miyagi to give it to her father Unosuke, the husband of the deceased.
(...) This issue is the eighth sequel to the excellent "Zatoichi monogatari" (Kenji Misumi, 1962). The director of every film about the adventures of the blind swordsman is not always the great Kenji Misumi, but this is the case in this "Zatoichi kessho-tabi" that we are dealing with today, and whose international title in English comes to be, without much sense, "Fight, Zatoichi, fight". We say without much meaning because that title is not necessarily descriptive of the film (Zatoichi fights in all his films), and we are inclined to think that it is not the literal translation from Japanese either.