* Image is for illustrative purposes only.Hōki Tradition
伯耆伝
A local sword tradition that flourished in Hōki Province (present-day Tottori Prefecture). Master smiths such as Yasutsuna, Aritsuna, and Sanemori were active in this tradition. In particular, Yasutsuna, as the creator of "Dōjigiri Yasutsuna," one of the Five Greatest Swords of Japan, left an immortal name in the history of the Japanese sword. Displaying a distinctive character compared to the two great traditions of Bizen and Yamashiro, it stands as an important local tradition connected to the origins of the Japanese sword.
Description
Hōki Province and the Dawn of the Japanese Sword
Hōki Province (modern Tottori Prefecture, central-western region) sits in the Sanin district and has long been known as a rich source of iron sand. The Hino River and Tenjin River valleys accumulated high-quality iron sand—the raw material for tatara iron-smelting—and against this metallurgical resource, advanced forging techniques developed from antiquity.
The Hōki tradition (Hōki-den) stands outside the Five Great Schools (Yamashiro, Yamato, Bizen, Sōshū, Mino), yet its historical importance rivals any of them. Yasutsuna in particular is believed to have flourished in the late Heian period (late 10th to early 11th century), and confirmed works attributable to him rank among the oldest surviving Japanese swords.
Yasutsuna's active period coincides with the decisive moment in Japanese sword history—the transition from straight blades to curved tachi—hinting that the Hōki tradition played a deep role in the birth of the Japanese sword. The San'in ironwork culture zone, encompassing Izumo, Hōki, and Inaba, possessed centuries of accumulated craft heritage and was a major center of sword production, developing in parallel with the traditions later codified as the Five Great Schools.
Yasutsuna and Dōjigiri Yasutsuna
The name Yasutsuna is indispensable when discussing the Hōki tradition and Japanese sword history as a whole. The tachi known as "Dōjigiri Yasutsuna," attributed to Yasutsuna, is counted among the Five Greatest Swords (Mikazuki Munekika, Daitantai Mitsuyoshi, Dōjigiri Yasutsuna, Onikiri Kunitsuna, Juzu-maru Tsunetsugu) and stands as a National Treasure of supreme rank.
The name "Dōjigiri" derives from the legend of the Heian-period warrior Minamoto no Yorimitsu, who is said to have slain the demon Shuten-dōji of Ōeyama with this very blade. The tradition holds that Yorimitsu used this tachi to sever the head of Shuten-dōji, and from this deed the blade earned the name "Dōjigiri," subsequently venerated as a spiritual sword that slew demonic beings. Records of test-cutting (tameshigiri) survive, documenting the blade's superior cutting performance when tested on the remains of prisoners—a record preserved in historical documents.
Today, Dōjigiri Yasutsuna is housed in the Tokyo National Museum, where it stands as a National Treasure of particular significance in sword culture. The tachi measures 2 shaku 6 sun 5 bu (approximately 80 cm) in length, displays deep koshi-zori curvature, and retains the perfect Heian-period form with a small ko-kissaki point. Its ko-itame grain bears an ancient, graceful hamon of flowing irregularity, and after nearly a thousand years, its perfection remains entirely undiminished—revered as a supreme artifact embodying the very origins of Japanese sword art.
Aritsuna, Mamori, and the Development of the Hōki Tradition
Aritsuna and Mamori, known as successors to Yasutsuna, were crucial bearers of the Hōki tradition. Aritsuna is believed to have been either the son or disciple of Yasutsuna, and while inheriting his master's techniques, he opened his own artistic path. Though confirmed signed works by Aritsuna are extremely rare, those that survive are highly valued as precious records exhibiting the earliest formal characteristics of ancient swords.
Mamori, continuing after Aritsuna in the Hōki lineage, is believed to have been active until the early Kamakura period. His works show forms closer to Kamakura style, with well-developed grain and hamon, yet retain a transitional character bearing traces of the ancient elegance of the late Heian.
From the late Kamakura onward, the Hōki tradition faded as powerful schools such as Bizen, Sōshū, and Yamato rose to dominance, and by the Northern and Southern Courts period, its activity as an independent school becomes difficult to trace. Nevertheless, Hōki's iron sand and iron-production culture continued as the "Izumo tatara" tradition of iron-making through the modern era, making an indirect yet vital contribution to later sword manufacture.
Aesthetic Qualities of Hōki Swords and Contemporary Evaluation
Works by the Hōki tradition, exemplified by Yasutsuna, hold exceptional historical and archaeological value precisely because they rank among the oldest surviving Japanese swords. The opportunity to see Dōjigiri Yasutsuna in person occurs only once yearly in special exhibitions, yet all who have witnessed it speak uniformly of "the primordial beauty of the Japanese sword."
The ancient, graceful hamon that floats upon the ko-itame grain, the elegant tachi form with its deep koshi-zori, the refinement that persists undiminished through a thousand years—these qualities are transmitted as one of the ideals that modern swordsmiths aspire to achieve. To know Yasutsuna of Hōki is to enter a gateway to understanding that the Japanese sword transcends mere weaponry, becoming instead a cultural crystallization in which myth, legend, artistry, and technique are unified.
In contemporary sword collecting and scholarship, the Hōki tradition remains an important research theme, and scholarly interest in the relationship between San'in ironwork culture and the emergence of the Japanese sword shows no sign of waning today.
Characteristics of This Era
- Among the oldest surviving Japanese swords — Yasutsuna's works document the transition from straight blades to curved tachi in the formative period of the Japanese sword
- Deep koshi-zori and ko-kissaki — the archaic Heian ideal; functional and aesthetic perfection in the same form
- Ancient jigane and hamon — ko-itame with a primitive, archaic hamon distinct from the later refined Gokaden schools; iron quality from Hōki tatara smelting of extraordinary durability
- Mythological resonance — Hōki swords are bound to demon-slaying legends; they embody the Japanese sword as spiritual object rather than mere weapon