OtherShintō (New Swords)Jōjōsaku

大和守安定

Yamato-no-kami Yasusada

Period

Early Edo

School

Edo Shintō

Active Years

17世紀中期

Tradition

Other

Rank

Jōjōsaku

Description

## A Leading Master of Edo Shintō — Yamato-no-kami Yasusada Yamato-no-kami Yasusada was one of the preeminent swordsmiths of the early Edo Shintō period, active primarily in Edo during the Manji and Kanbun eras (1658–1673). Paired with Nagasone Kotetsu as "the two pillars of Edo Shintō," he is celebrated for his refined jigane and elegantly varied hamon. While the contemporaneous Kotetsu was known for his bold Sōshū-inspired approach, Yasusada established his own distinctive world through refined Yamashiro-lineage jigane and graceful hamon composition. The details of Yasusada's origins remain debated, but he is generally believed to have come from Yamashiro province or its vicinity, training in Kyoto before establishing himself in Edo. There he attracted great popularity among the shogunate's warrior class and hatamoto retainers, leaving behind a substantial body of fine work. ## Historical Context — The Kanbun Shintō Period at Its Zenith The Kanbun era (1661–1673) in which Yasusada flourished is recognized as the golden age of "Kanbun Shintō" — a pivotal chapter in new-sword history. During this period, sword shapes underwent a major transformation: the shallow-curved, long-tang "Kanbun姿" (Kanbun form) became the standard aesthetic. In hamon as well, varied compositions centered on gunome and notare became fashionable, and the leading smiths of Edo and Osaka competed to produce distinctive works. In Osaka, Tsuda Sukehiro and Inoue Shinkai led the field; in Edo, Nagasone Kotetsu and Yamato-no-kami Yasusada were the foremost names. These four smiths are remembered by later generations as the pinnacle of Shintō-period swordmaking, and Yasusada occupies an unshakeable position in Shintō history as one of this constellation. ## Blade Characteristics — Refined Jigane and Graceful Hamon Yasusada's most defining characteristic is the refinement of his jigane combined with the graceful variation of his hamon. The jigane shows fine ko-itame forging, richly covered in ji-nie to produce a moist and vivid surface. The clarity and beauty of his jigane — tracing the Yamashiro tradition — stands out even compared to his Osaka contemporaries, and he maintained a Kyoto-style dignity at the heart of warrior-culture Edo. His hamon centers on gunome and notare with varied inclusions of pointed tips, small clove-shapes (ko-choji), and irregular forms to create a dynamic composition. The nie is bright and clear, with kinsuji and sunagashi appearing throughout. The composition is orderly yet never monotonous — this never-boring aesthetic variation is the essence of Yasusada's art. In shape, his works follow the typical Kanbun Shintō form of shallow curvature and long tang, presenting dignified pieces that balance practicality and beauty. Many works have kissaki of the medium-extended type, faithfully reflecting the aesthetic sensibility of the era. ## Comparison with Kotetsu — The Two Poles of Edo Shintō Nagasone Kotetsu and Yamato-no-kami Yasusada are both ranked at the summit of Edo Shintō, but their styles show contrasting characteristics. Where Kotetsu pursued the bold activity of Sōshū-den in an Edo context, Yasusada grounded his work in the refined jigane and graceful hamon of the Yamashiro tradition. Within Edo's warrior society, some patrons preferred bold power while others sought dignified refinement, and Kotetsu and Yasusada each addressed different demands. The difference in their styles symbolizes the diversity and richness of Edo Shintō — not a simple hierarchy of better or worse, but two smiths each embodying a distinct aesthetic ideal. ## DATEKATANA and Yamato-no-kami Yasusada DATEKATANA presents Yamato-no-kami Yasusada as the smith who embodies the essence of the Yamashiro tradition within Edo Shintō. Standing as the paired counterpart to the bold Sōshū-inspired Kotetsu, Yasusada's refined and graceful style is an important witness to the diversity of beauty in the Japanese sword. As a smith who represents the Kanbun Shintō era at its zenith, Yasusada's name is permanently inscribed in the history of the Japanese sword.