吾妻鏡
The "Azuma Kagami" was compiled after 1266 under the directive of the Hōjō shikken (officially a regent to a shōgun, but the "de facto" ruler) and is a record in diary form of events occurring in Japan. Written in a Japanized version of classical Chinese known as , the massive work was incomprehensible to most Japanese until an edition with furigana glosses was published in 1626. It was given in present to shōgun Tokugawa Ieyasu in 1603, who obtained the missing section from other daimyos and then ordered the preparation and publication of the Fushimi version of the Azuma Kagami in "Kokatsujiban", the old movable-type printing. This edition in turn became the basis for the present printed editions. Ieyasu considered the book as the product of historical wisdom, kept it at his side, and consulted it often.