The Yagyu family regards "no sword" as the essence of their swordsmanship. However, in reality Tajima Mori Munomi of the Yagyu family was responsible for controlling the daimyo of various places due to his authority as the "Omatsu", and he alone suffered the resentment of the powerful. At home, he was the father of four sons and a father who lamented the dissoluteness and weakness of his sons. This work depicts the turbulent inner world of this "Sword Master".