Tachi Sword (inscribed with the Inscription "Shingyoshin" on

Tachi Signed "Saneyuki": A Sacred Sword Bridging the Ancient Hōki Tradition and the Sengoku Era at Atsuta Jingu

Among the more than 450 swords preserved at Atsuta Jingu in Nagoya, one tachi (long sword) stands out as a remarkable witness to nearly half a millennium of Japanese history. Forged by the swordsmith Saneyuki of Hōki Province during the Heian to Kamakura period, this elegant blade was later dedicated to the deities of Atsuta Daimyōjin in 1571 by a samurai named Ōkubo Yokurō. The dedication inscription, carefully carved into the blade itself, transforms the sword from a personal weapon into a sacred offering, capturing a moment of profound devotion during one of Japan's most turbulent ages. Designated as an Important Cultural Property of Japan, it offers visitors a rare opportunity to encounter both a masterwork of early Japanese swordsmithing and a tangible record of Sengoku-period faith.

Historical Background: From Hōki Province to the Heart of Owari

The story of this tachi begins in Hōki Province, the western part of present-day Tottori Prefecture along the Sea of Japan. Hōki was one of the most ancient and revered centers of Japanese swordsmithing, home to legendary smiths such as Yasutsuna, whose name is associated with some of Japan's earliest classical swords. The Hōki tradition flourished from the late Heian period (794–1185) into the Kamakura period (1185–1333), and its smiths produced blades known for their dignified, graceful curvature and the rich, dynamic patterns of their hand-forged steel.

Saneyuki was active within this tradition, working in a region renowned for its iron-rich sands and its proximity to the great religious centers of San'in. While detailed biographical records of Saneyuki are scarce, the surviving signed works show the unmistakable hallmarks of the older Hōki school: a strong waist curvature, well-tempered hamon (blade pattern), and a quietly powerful presence.

By the late sixteenth century, this venerable blade had passed into the hands of Ōkubo Yokurō, a samurai of the Sengoku era. On the eighth day of the eighth month of Genki 2 (1571), he carried out a deeply meaningful act: he had a dedication inscription cut into the blade and offered the sword to the deities of Atsuta Shrine. The Genki years (1570–1573) were a time of intense warfare across Japan, with the rising power of Oda Nobunaga reshaping the political landscape of the Kinai and Tōkai regions. Atsuta Jingu, which Nobunaga had famously visited to pray for victory before the Battle of Okehazama in 1560, had become a focal point of warrior devotion.

Why It Was Designated an Important Cultural Property

The sword's designation as an Important Cultural Property reflects multiple layers of value that converge in a single artifact.

First, the blade itself is a rare surviving example of work by Saneyuki, representing the early Hōki tradition that lies near the historical roots of Japanese swordsmithing. With a blade length of approximately 72.7 centimeters and a curvature of 2.1 centimeters, the tachi displays the elegant proportions characteristic of the late Heian to Kamakura period, when the curved Japanese sword form was reaching its classical maturity.

Second, and perhaps even more remarkable, is the dedication inscription known as a kiritsuke-mei. Such inscriptions, cut directly into the blade by or on behalf of the donor, are a distinctive feature of many of the swords preserved at Atsuta Jingu. The shrine's records note that the practice of carving such votive inscriptions can be traced back to the early fifteenth century, and the kiritsuke-mei on this sword provides precisely dated, historically valuable evidence of warrior faith in the Sengoku period.

Third, the sword's continuous transmission through the shrine, from the moment of its dedication in 1571 to the present day, gives it an exceptional pedigree. Few swords from this era have remained with their dedicated sanctuary for so long without disruption, and this unbroken chain of custody adds significantly to its scholarly and cultural value.

Highlights and Points of Appreciation

The Inscription as a Window into Sengoku Devotion

The most distinctive feature of this tachi is its double inscription. On one side of the blade appears the dedication: "Genki 2, year of the metal sheep, eighth month, eighth day, Ōkubo Yokurō." On the reverse, the inscription reads, "Respectfully offered to Atsuta Daimyōjin." Reading these characters, visitors can almost feel the prayers of a sixteenth-century warrior who entrusted his hopes—perhaps for victory, perhaps for peace, perhaps simply for the protection of his lineage—to the great deities of Atsuta.

The Beauty of Heian-Kamakura Tachi Form

Beyond the inscription, the blade itself is a study in restrained elegance. The graceful curve, the subtle play of light along the hamon, and the quiet authority of the hand-forged steel all reward careful contemplation. Visitors familiar with later swords will notice how the tachi's deeper curvature near the hilt, known as koshi-zori, distinguishes it from the straighter, more aggressive swords of later periods.

Part of a Legendary Sword Collection

This tachi is one of more than twenty swords at Atsuta Jingu designated as National Treasures or Important Cultural Properties. It shares its sanctuary with such celebrated blades as the National Treasure tantō by Rai Kunitoshi, the famed "Maetsugu Tachi" associated with the Battle of Anegawa, and many other swords that span the entire history of Japanese swordsmithing from the Heian period to the modern era.

Visitor Information: Experiencing the Sword in Person

The Saneyuki tachi is part of the collection of Atsuta Jingu, one of the most important Shinto shrines in Japan. The shrine is best known as the sanctuary of Kusanagi-no-Tsurugi, one of the Three Sacred Treasures of the Imperial Family, and has been a center of worship for nearly two millennia.

Swords from the shrine's collection are displayed at Kusanagi-kan (剣の宝庫 草薙館, "Treasury of Swords, Kusanagi Hall"), a dedicated sword exhibition facility that opened in October 2021 to commemorate the new Reiwa era. Inside, visitors can view National Treasures and Important Cultural Properties in display cases designed to be viewed from both sides, with carefully calibrated lighting that brings out the subtle textures of the steel and the patterns of the hamon.

Specific swords on display rotate periodically, and the Saneyuki tachi may not always be visible. Travelers planning a visit specifically to see this blade are encouraged to consult the official schedule before traveling. Even when this particular tachi is not on view, Kusanagi-kan and the Treasure House (Bunkaden) offer many other masterpieces, along with a touchable replica of the legendary Tarōtachi great sword that lets visitors feel the astonishing weight of a true Sengoku-period weapon.

Atsuta Jingu is located approximately seven kilometers south of Nagoya Station and is easily reached by train. The nearest stations are Jingū-mae on the Meitetsu Nagoya Main Line (about three minutes' walk to the East Gate) and Jingū-Nishi on the Nagoya Municipal Subway Meijō Line. The shrine grounds, covering more than sixty thousand tsubo (about twenty hectares), are open from dawn to dusk, while Kusanagi-kan and Bunkaden have specified opening hours and admission fees.

Surrounding Attractions

A visit to Atsuta Jingu offers many additional experiences within the shrine grounds and the surrounding neighborhood.

Within the precincts, the Nobunaga-bei is a remarkable earthen wall donated by Oda Nobunaga in 1560 in gratitude for his victory at Okehazama. Considered one of the three great earthen walls of Japan, it stands as a tangible link to the same Sengoku world that produced the dedication of the Saneyuki tachi. The Ichi-no-Misaki Shrine, regarded as the most sacred area of Atsuta, lies along the Kokoro-no-Komichi forest path and welcomes visitors during daytime hours.

Just outside the shrine, the historic neighborhood of Atsuta-ku preserves the atmosphere of Miya-juku, the former post town on the Tōkaidō highway that connected Edo and Kyoto. Local culinary specialties include hitsumabushi, a celebrated Nagoya-style grilled eel dish; the historic restaurant Atsuta Hōraiken near the shrine has been serving this dish for generations.

For those interested in extending a sword-themed pilgrimage, the Tokugawa Art Museum, located about twenty minutes away, holds further important sword collections from the Owari Tokugawa family. Nagoya Castle, with its golden shachihoko ornaments, is another major historical attraction in the city.