Kan'ei-Era Sword Culture

Kan'ei Culture and the Transformation of Swords into Art Objects

With the end of the Siege of Osaka in 1615 under the Buke Shohatto edicts, Japan entered a period of genuine peace. The Kan'ei years (1624–1644), when the third shogun Tokugawa Iemitsu established his rule, became known as the Kan'ei era—an early Edo cultural flourishing when tea ceremony, noh theater, painting, and literature all blossomed. Within this cultural environment, swords rapidly lost their character as "weapons" and increasingly took on the character of "art objects" and "spiritual symbols of the samurai."

The role most crucial in this transformation was played by the Honami family, a lineage of sword appraisers. Honami Kōtoku (1556–1619) systematized sword appraisal as an organized discipline and established the practice of issuing authentication certificates called origami for celebrated blades throughout history. The origami recorded the smith's name, blade length, and assessed value (in monetary units), and the evaluation certificates, guaranteed by the authority of the Honami family, functioned to officially recognize the cultural and economic value of swords.

The Honami Family's Appraisal System

After Kōtoku's death, the Honami family's appraisal system was inherited by successive heads including Kōshitsu, Kōon, and Kōjō, and during the Kan'ei years it became fully established as the institution responsible for managing swords for the shogunate and the various daimyo. The Honami family inherited the position of official sword appraiser to the shogun's house across generations and controlled the economic foundation of sword culture through activities such as issuing origami for celebrated swords, collecting polishing fees, and setting sword market prices.

The establishment of this appraisal system was the greatest institutional factor promoting the transformation of Japanese swords into art objects. By having value objectified and quantified through origami certificates, swords metamorphosed from private possessions of individual samurai to objects of collecting, appreciation, and commerce—cultural assets. Early Edo daimyo competed to collect celebrated blades with authenticated origami, and the quality and quantity of these collections became evidence of a daimyo's cultural refinement.

Swordsmiths of the Kan'ei Period

After the masters of the Keichō Shintō era completed their work, a new generation of swordsmiths rose to prominence during the Kan'ei years. Particularly notable during this period was the activity of the second and third generations of Echizen no Kami Yasutsugi. These later generations inherited the techniques of the first Yasutsugi, who had been recognized by Tokugawa Ieyasu, and continued to serve as official smiths for the shogun's household. The Yasutsugi family, permitted to carve the Tokugawa mon (crest) on the nakago of their blades, became a symbol of early Edo sword culture as an entity unified with the authority of the Tokugawa regime.

In Settsu Province (present-day Osaka and Hyogo prefectures), the foundation of the Osaka Shintō that would blossom in the Bunka era was quietly being laid during the Kan'ei years. The first Izumi no Kami Kunisada (Oyakunisada) was active from the late Keichō period through the Kan'ei years, developing the techniques he inherited from Horikawa Kunihiro in Osaka. Kunisada's works displayed the robust nie inherited from Kunihiro combined with active gunome-pattern hamon, laying the foundation for the later flourishing of Osaka Shintō.

The Maturation of Bushidō and Transformation of Sword Aesthetics

The Kan'ei period was also an era when bushidō philosophy became formally articulated and systematized. Yamaga Sokō theorized about the moral way of the samurai, and Neo-Confucian scholars such as Fujiwara Seika and Hayashi Razan provided the philosophical foundations for samurai culture. Within this intellectual context, swords ceased to be mere weapons and came to be understood as the "soul of the samurai" (bushidō no tamashii), imbued with spiritual and philosophical significance.

The phrase "the sword is the soul of the samurai" became widely circulated in early Edo, and the spiritual significance of samurai bearing swords became socially recognized. This intellectual transformation gave samurai society justification for collecting and appreciating swords as art objects, and together with the Honami family's appraisal system, it formed the philosophical foundation of sword collector culture.

The Legacy of Kan'ei Culture

The three elements established by Kan'ei-period sword culture—the transformation of swords into art objects, the origami system, and the union with bushidō—continued to function as the foundation of Japanese sword culture throughout the subsequent Edo period. The framework for sword appraisal, preservation, and appreciation established during this era became the direct historical origin of the modern NBTHK (Japan Sword Preservation Society) appraisal system. To study the Kan'ei years is to touch the very roots of contemporary sword culture.