Fukuoka Ichimonji Norifusa

Fukuoka Ichimonji Norifusa was a master swordsmith of the Fukuoka Ichimonji school active in Bizen Province during the middle Kamakura period (ca. 1225–1260). Together with Yoshifusa and Sukezane, he is counted among the "Three Masters of Fukuoka Ichimonji." He is also considered the founder of the Katayama Ichimonji branch, named for his subsequent relocation to the Katayama district.

His defining stylistic trait is the reverse-slanting quality of his choji hamon—what appraisers call "saka-gakari." While most Fukuoka Ichimonji smiths produced forward-slanting choji, Norifusa's characteristic reverse-slanting choji is the primary kantei point distinguishing his work. The jihada shows a vigorous itame with strong nie and vivid midare-utsuri, and the hamon features juka-choji and kawazo-choji of varying heights, with the boshi tending to be irregular with a pointed or slightly rounded return.

Two works by Norifusa hold National Treasure status: the signed "Tachi Mei Norifusa" at Fukuyama Art Museum (Hiroshima), originally given by the fifth Tokugawa shogun Tsunayoshi to celebrate the birth of his successor's son; and the unsigned "Katana Mumei Norifusa" at the Kyushu National Museum (Fukuoka), identified by the Hon'ami family and praised for its high, reverse-footed juka-choji with tobiyaki near the monouchi.

Norifusa receives the highest "Saijōsaku" ranking and stands as one of the indispensable masters of Kamakura-period Bizen sword-making.