Hagakure (Kyūjitai: 葉隱; Shinjitai: 葉隠; meaning Hidden by the Leaves or Hidden Leaves),[1] or Hagakure Kikigaki (葉隠聞書), is a practical and spiritual guide for a warrior, drawn from a collection of commentaries by the clerk Yamamoto Tsunetomo, former retainer to Nabeshima Mitsushige (July 10, 1632 – July 2, 1700), the third ruler of what is now Saga Prefecture in Japan.
Written during a time when there was no officially sanctioned samurai fighting, the book grapples with the dilemma of maintaining a warrior class in the absence of war and reflects the author's nostalgia for a world that had disappeared before he was born.
Hagakure was largely forgotten for two centuries after its composition, but it came to be viewed as the definitive guide of the armed forces of the Empire of Japan during the Pacific War.
However, the true meaning is that by having a constant awareness of death, people can achieve a transcendent state of freedom, whereby "it is possible to perfectly fulfill one's calling as a warrior.
By the late 1600s and early 1700s, samurai faced the dilemma of maintaining a warrior class in the absence of war, and Hagakure reflects this uncertainty.