Living National Treasure (Japanese Sword Smith) Designation — Official State Recognition of Sword Forging Technique as Intangible Cultural Property

In Showa 25 (1950), the Cultural Property Protection Law was enacted. This law significantly expanded pre-war art conservation legislation and was the first to explicitly codify the concept of "Intangible Cultural Property" in law. Intangible Cultural Property refers to cultural value embodied not in physical objects but in human skill and knowledge—such as theatrical and musical performance, craft techniques, and the like. Then in Showa 30 (1955), the Committee for Cultural Property Protection designated the first "Living National Treasures" as holders of Important Intangible Cultural Properties. Japanese sword forging technique was included among the very first recognized categories.

This system's establishment was the fruit of sword preservation activism during the GHQ occupation period, which persistently argued that "Japanese swords are not weapons but works of art." It marked a historical turning point where Japanese sword smithing technique was publicly acknowledged by the state as the highest category of Cultural Property.

The First Designee—Takahashi Sadatsugu and the Birth of "Living National Treasure"

In Showa 30 (1955), Takahashi Sadatsugu (1902–1968) became the first to be designated as an Important Intangible Cultural Property Holder in sword forging technique. Building on the Bizen tradition, Takahashi established his own distinctive forging method, earning high recognition for his achievement in restoring ancient jihada and hamon patterns to the modern era. His designation as a Living National Treasure represented the state's official acknowledgment that his technique occupied the pinnacle of Japanese sword smithing, and for subsequent blade smiths, "Living National Treasure" became the ultimate aspiration.

Takahashi Sadatsugu's swords embodied deep mastery of both Soshu and Bizen techniques. His apprentices continue to work as active contemporary sword smiths. The impact of his designation on the sword-smithing world transcended mere individual recognition; its greatest significance lay in establishing the social perception that "blade smiths are artists."

Miyairi Akihira—The Master of Shinano and His Living National Treasure Status

Designated a Living National Treasure in Showa 38 (1963), Miyairi Akihira (1913–1977) was a blade smith of Nagano Prefecture (ancient Shinano Province) who forged his own distinctive aesthetic. Miyairi was committed to tamahagane (jewel steel) produced through traditional tatara iron-smelting, refusing to employ modern industrial materials and adhering strictly to traditional methods.

Miyairi's style was characterized by a revival approach grounded in research of ancient masterworks, excelling particularly in restoring the jihada and hamon of Yamashiro and Yamato traditions. The workshop he established in Sakaki, Nagano, devoted considerable attention to training apprentices and gave rise to the "Miyairi School"—continuing today through his son Miyairi Norihiro and grandson Miyairi Kozaemon Akihira.

Miyairi Akihira's commitment to tamahagane became the philosophical foundation for the "traditional materials priority" ideology that persists in modern sword circles. The Japanese Art Sword Preservation Society (NBTHK) operates the annual "NBTHK Tatara" ironworking (conducted in Unnan City and Oku-Izumo), continuing the ideological legacy of Miyairi and his successors. This spirit remains alive in contemporary sword craft.

Amata Akitsugu—The International Apex of Modern Sword Culture

Amata Akitsugu (1927–2013) was designated a Living National Treasure in Heisei 9 (1997). Amata conducted exhaustive research into masterpieces of both old and new sword traditions, demonstrating exceptional technical prowess especially in reproducing the intricate jihada, nie, and nioi characteristic of the Soshu tradition.

Amata's swords earned high regard from overseas collectors and contributed significantly to the international recognition of Japanese swords as "world-standard works of art" in the global collecting and fine arts market. One of his apprentices, Ueda Sukesada, does not bear the "Living National Treasure" title but stands as a representative contemporary blade smith and custodian of Amata's technical legacy.

Sumitani Masamine—Bizen Tradition Revival and Cultural Property Preservation Philosophy

Sumitani Masamine (1921–1998) was designated a Living National Treasure in Showa 56 (1981). A native of Matsuai, Ishikawa Prefecture (ancient Kaga Province), Sumitani devoted his life to restoring the Bizen tradition—particularly the chonji midare (geometric clover-pattern) hamon and itame (wood-grain) forging patterns.

Sumitani's work extended beyond technical revival of the blade to encompass the regeneration of regional cultural identity. He engaged in efforts to restore historical pride in Bizen as a sword-producing region centered on Osafune, and actively collaborated with regional institutions such as the Okayama Prefectural Museum.

The Living National Treasure System's Impact on Sword Culture

The Living National Treasure system functioned as far more than an honorific title. It played a substantive role in the continuity of Japanese sword smithing. Structurally, the system included provisions for technical documentation and subsidies for apprentice training, with the state bearing part of the cost of technical transmission.

Furthermore, Living National Treasure designation conferred added prestige on a smith's work—marking it as "the work of a state-recognized artist"—thereby elevating recognition among domestic and international museums, galleries, and collectors. It remains customary today for works by Living National Treasures to be displayed in special exhibitions at the Tokyo National Museum, Kyushu National Museum, and the Touken Museum (Ryogoku, Tokyo), establishing them as benchmarks for the artistic evaluation of contemporary swords.

Moreover, Japan's cultural heritage administration model, embodied in the Living National Treasure system, influenced the intangible cultural property protection systems adopted by other Asian nations including South Korea and Taiwan. The international framing of Japanese sword smithing within the discourse of intangible cultural heritage protection owes much to this system's existence.

Contemporary "Living National Treasures" and Reiwa-Era Sword Culture

In the modern Heisei and Reiwa periods, the Living National Treasure system continues to occupy the center of sword culture. Miyairi Norihiro (son of Miyairi Akihira) remains a representative contemporary blade smith, while Yoshihara Yoshito, based in the United States, has contributed to the international promotion of Japanese sword forging. Ueda Sukesada (Okayama) draws attention for his commitment to self-producing tamahagane.

The "Touken Ranbu" pop culture phenomenon (from 2015 onward) heightened younger generations' interest in Living National Treasure works and contributed to increased museum attendance at sword institutions. This current era, termed the "Reiwa Sword Renaissance," represents the flowering—seventy years later—of seeds sown when the Living National Treasure system was established in 1955.

Tamahagane and Tatara—Preserving Tradition Through Material

One of the most significant byproducts of the Living National Treasure system was institutional support for tamahagane production. Traditional sword forging depends upon tamahagane smelted through the ancient tatara iron-working method, yet since the Meiji modernization, tatara ironworking declined rapidly in the face of industrial steel production. Miyairi Akihira's unwavering principle of "using no material but tamahagane" became the catalyst for the NBTHK to establish a support framework for tatara operations in Okuizumo, Shimane Prefecture.

Today, the annual "NBTHK Tatara" conducted by the NBTHK in Unnan City and Oku-Izumo serves as the sole public institution supplying traditional tamahagane to contemporary blade smiths. Without this initiative, nearly all contemporary smiths would have been forced to resort to industrial steel, and "Japanese swords made through traditional methods" might have been lost in both form and substance.

Living National Treasures' Apprentices—The Chain of Transmission

The Living National Treasure system supported not only direct designation but also the technical transmission through master-apprentice relationships. Today, the apprentices who trained under the various Living National Treasures—Takahashi Sadatsugu, Miyairi Akihira, Amata Akitsugu, and Sumitani Masamine—form the core of the contemporary blade-smithing world and in turn cultivate the next generation. Ueda Sukesada (Amata Akitsugu lineage), Yoshihara Yoshito, Yoshihara Shoji (Yoshihara school), and Kawauchi Kunihira exemplify this succession.

This master-apprentice chain stands as testimony that the sword-forging tradition originating from medieval master smiths has been passed "from person to person" to the present day. The Living National Treasure system functions as the mechanism through which the state formally certifies and supports this chain.

From the moment the first designation was conferred upon Takahashi Sadatsugu in Showa 30, Japanese sword smithing transformed from "craftsman's work" into "a human cultural legacy to be preserved by the state." This transformation created the institutional and spiritual foundation upon which rich modern Japanese sword culture stands today.