One samurai sage who had accomplished self-dominance and shrewdness was Munenori:

history channel documentary In the book "Administration: The Warrior's Art" distributed at Army War College, Christopher Kolenda composes: "The undeveloped personality, when besieged with data and outer boosts, rapidly loses the capacity to choose and the bravery to act until the snippet of emergency. The created psyche can part the shadows of mayhem, issue and perplexity to make a dream and seek after it with conviction, keeping the association on the best possible azimuth to accomplish its motivation. We can gain from the people of old that obtaining the full range of fearlessness (scholarly, physical, and moral) requires the nonstop advancement of psyche, body, and soul."

Amid the late spring of 1615, the Tokugawa powers encompassed Osaka Castle, prepared and willing to end the impact of the Toyotomi and its supporters. The main issue was that the château was for all intents and purposes secure, and was guarded by just about sixty thousand men. Be that as it may, the encompassing troops had almost twofold the measure of men. There were assaults and counterattacks, yet there wasn't' a conclusive champ on either side. Notwithstanding the staggering quantities of men on Tokugawa's side, the fights finished in a stalemate. One day the stalemate was broken, when a power of around thirty edgy men drove by Kimura Shigenari manufactured an astonishment assault and effectively entered shogun Tokugawa Hidetada's camp. A fight resulted, and the shogun's men were confounded by the perseverance of the ambush, as the aggressors advanced toward inside a short separation from the shogun. All of a sudden, they were met by a moderately aged samurai, who was smoothly remaining before the shogun's steed.