Matajuro Yagyu, son of a renowned master of the sword, was relegated by his father, who believed his efforts were not sufficient to become a true master. Matajuro, who had decided, despite everything, to conquer that objective, traveled to mount Futara with the intent of finding the famous master Banzo, but this master only confirmed his father's judgement:
It was then demanded of Matajuro that he would not speak of the art of the sword or touch a sword again. He served the master, preparing his meals, cleaning his rooms and tending to his garden, always without uttering a single word about the art of the sword. He was even forbidden to watch the training of the other students.
Three years passed and Matajuro, always working, thinking often of his misfortune, since he could still not devote his life to study of the art he had chosen. One day, while he was tending his chores, lost in his sad thoughts, Banzo crept close to him, and struck him hard on his back with the bokken. On the next day, Matajuro was preparing the rice and the master attacked him again, when he least expected. From that day forward, Matajuro was forced to defend himself day and night from the sudden attacks of Banzo. Always alert to avoid the sword of the master.
He learnt so quickly that his concentration, his speed and a sort of sixth sense enabled him to avoid Banzo's attacks. Then one day, before completing ten years after his arrival, the master told him he had nothing more to teach him.