In his 1979 Dissertation about the Hojo, Dr. Carl Steenstrup noted that 13th and 14th century warrior writings (gunki) "portrayed the bushi in their natural element, war, eulogizing such virtues as reckless bravery, fierce family pride, and selfless, at times senseless devotion of master and man."

Feudal lords such as Shiba Yoshimasa (1350-1410 A.D.) stated that a warrior looked forward to a glorious death in the service of a military leader or the emperor: "It is a matter of regret to let the moment when one should die pass by....First, a man whose profession is the use of arms should think and then act upon not only his own fame, but also that of his descendants. He should not scandalize his name forever by holding his one and only life too dear....One's main purpose in throwing away his life is to do so either for the sake of the Emperor or in some great undertaking of a military general. It is that exactly that will be the great fame of one's descendants."


General Akashi Gidayu preparing to commit Seppuku after losing a battle for his master in 1582. He had just written his death poem.In 1412 A.D., Imagawa Sadayo wrote a letter of admonishment to his brother stressing the importance of duty to one's master. Imagawa was admired for his balance of military and administrative skills during his lifetime and his writings became widespread. The letters became central to Tokugawa-era laws and were a required study for traditional Japanese until World War II:

First of all, a samurai who dislikes battle and has not put his heart in the right place even though he has been born in the house of the warrior, should not be reckoned among one's retainers....It is forbidden to forget the great debt of kindness one owes to his master and ancestors and thereby make light of the virtues of loyalty and filial piety....It is forbidden that one should...attach little importance to his duties to his master...There is a primary need to distinguish loyalty from disloyalty and to establish rewards and punishments.