Hagakure, simply put is a book about warrior culture. Written in a time of peace by Tsuramoto Tashiro who compiled these commentaries from his conversations with Tsunetomo from 1709 to 1716; Yamamoto Tsunetomo a samurai whom was forbidden to perform junshi, a retainer's ritual suicide after his master died, by an edict of the Tokugawa Shogunate combined with his master's disapproval of the tradition.

The book is filled with proverbs, observations, Lessons on bushido as well as Yamamoto Tsunetomo's views on bushido, the warrior code of the samurai.