* Image is for illustrative purposes only.Sword of Toshihira Ōsumi
大隅俊平の刀
Also known as: Toshihira Ōsumi Uchigatana (Living National Treasure & Master Swordsmith of Modern Gunma)
Description
Ōsumi Toshihira (1932–2009) was the supreme contemporary swordsmith, based in Ōta City, Gunma Prefecture, and designated a Holder of Important Intangible Cultural Property (Living National Treasure) in 1997. He apprenticed under Miyairi Akihira (also a Living National Treasure), who led the postwar revival of Japanese sword-craft, and devoted himself to transmitting ancient iron-smelting and forging techniques to the present day.
The defining characteristic of Toshihira's blades is the thorough use of tamahagane steel and a jigane beauty approaching that of koto blades. He personally selected tamahagane produced by the ancient tatara iron-smelting method—a technique now nearly lost—and through repeated folding and forging achieved a moist, luminous jigane rare in contemporary work. The steel exhibits a primarily ko-itame surface, with itame and masame naturally interwoven, producing a complex, layered visual texture. The hamon, based on gunome, gracefully intertwines chōji and ko-midare, with fine, evenly distributed nie that evokes the finest Ko-Bizen masterworks.
Through his work in Gunma, he was highly regarded by the Agency for Cultural Affairs as a living link transmitting Kantō sword-smithing tradition. He devoted himself not only to blade-forging but to training successors; his workshop produced multiple accomplished swordsmiths. He actively promoted Gunma's iron culture through restoration demonstrations of tatara smelting and public lectures, widely communicating the cultural value of Japanese swords to society.
Even after his Living National Treasure designation, he continued prolific production, creating numerous masterworks until his death in 2009. His works are highly valued by prominent collectors both domestically and internationally and are housed in major museums worldwide. His contemporary blades command premium prices, regularly fetching several million to over ten million yen per piece. Revered as an embodiment of "ancient blade mastery in the modern age," Toshihira's work stands as the supreme achievement of Japanese sword-craft in the twenty-first century, securing a firm place in the history of the Japanese sword.
Legends & Stories
There is a tale that Toshihira's teacher, Shōhei Miyairi, instructed him: "A sword is born after forging. Channel your will through the final quenching." On the night of Toshihira's first successful quench, the blade continued glowing orange long after the workshop forge fire died—a legendary moment in his apprenticeship. Another story tells of a prominent sword appraiser who brought one of Toshihira's early works to examine. Skeptical, asking "Is this truly a modern blade?", the appraiser commissioned a detailed metallurgical analysis. The results revealed that the purity of the tamahagane and the traces of folding and forging were so refined as to rival Kamakura-period ancient swords, prompting the appraiser to bow deeply in respect on the spot. When informed of his Living National Treasure designation, Toshihira is said to have quietly remarked, "The sword was recognized, not I," a statement that embodies both the pride and humility of a true swordsmith and is treasured among his disciples as a guiding principle of his craft.