北条政子

Hojo Masako (1157–1225), wife of the first Kamakura shogun Minamoto no Yoritomo and later known as the 'Nun Shogun,' was the most powerful woman in Japanese political history. When Yoritomo died in 1199, Masako entered religious orders but retained full political authority, effectively ruling through her family, the Hojo clan, as regents. Her defining moment came during the Jōkyū War of 1221, when the retired emperor Go-Toba issued an edict calling for the overthrow of the shogunate. Masako gathered the warrior vassals and delivered a speech of extraordinary power, invoking Yoritomo's legacy and the debt every samurai owed to the Kamakura system. The warriors were moved; the imperial forces were crushed. The cultural significance of her rule extends to the sword: it was during the Hojo regency that the great smiths gathered in Kamakura and the Sōshū tradition — the school of Masamune — was born. The fierce nie activity and bold jigane that define the Sōshū style emerged under the patronage of a warrior government that Masako had fought to preserve.