Overview
The first recorded act of seppuku was performed by Minamoto no Yorimasa during the Battle of Uji in the year 1180. Seppuku eventually became a key part of bushido, the code of the samurai warriors; it was used by warriors to avoid falling into enemy hands, and to attenuate shame and avoid possible torture. Samurai could also be ordered by their daimyo (feudal lords) to carry out seppuku. Later, disgraced warriors were sometimes allowed to carry out seppuku rather than be executed in the normal manner. The most common form of seppuku for men was composed of the cutting of the abdomen, and when the samurai was finished, he stretched out his neck for an assistant to decapitate him. Since the main point of the act was to restore or protect one's honor as a warrior, those who did not belong to the samurai caste were never ordered or expected to carry out seppuku. Samurai generally could carry out the act only with permission.
Sometimes a daimyo was called upon to perform seppuku as the basis of a peace agreement. This would weaken the defeated clan so that resistance would effectively cease. Toyotomi Hideyoshi used an enemy's suicide in this way on several occasions, the most dramatic of which effectively ended a dynasty of daimyo. When the Hōjō were defeated at Odawara in 1590, Hideyoshi insisted on the suicide of the retired daimyo Hōjō Ujimasa, and the exile of his son Ujinao; with this act of suicide, the most powerful daimyo family in eastern Japan was put to an end.
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