In the beginning of the 13th century, Emperor Go-Toba found his attempts at political maneuvers blocked by the Kamakura shogunate. Seeking independence, and the power rightfully his as [[Emperor of Japan|the ruler of Japan]], Go-Toba gathered allies in 1221, and planned to effect an overthrow of the shogunate. These allies consisted primarily of members of the [[Taira clan]], and other enemies of the [[Minamoto clan]], the victors in the [[Genpei War]], and clan of the [[shogun]]s. | In the beginning of the 13th century, Emperor Go-Toba found his attempts at political maneuvers blocked by the Kamakura shogunate. Seeking independence, and the power rightfully his as [[Emperor of Japan|the ruler of Japan]], Go-Toba gathered allies in 1221, and planned to effect an overthrow of the shogunate. These allies consisted primarily of members of the [[Taira clan]], and other enemies of the [[Minamoto clan]], the victors in the [[Genpei War]], and clan of the [[shogun]]s. |