Complete Guide to Tachi Types: Thread-Wrapped, Black Lacquer, Ornamental, and Hyogo-Gusari Tachi — Form and Ceremonial Significance

What is "Tachi"? — Definition and Basic Classification

"Tachi" (太刀) represents the most fundamental and formal style of Japanese sword in the history of the katana. The basic definition of tachi is characterized by a blade length (length of the cutting edge) of approximately 60cm or more, and it is carried suspended from the waist with the cutting edge facing downward (worn). In contrast to this, the "uchigatana" (打刀), which is worn at the waist with the cutting edge facing upward, is distinguished from the tachi.

The concept of tachi actually encompasses diverse types and forms. The simple categorization of "a sword with a large curve suspended from the waist = tachi" fails to capture its rich diversity. In this article, we will explain in detail representative types of tachi from the perspectives of form, function, and historical background.

Itomaki Tachi (糸巻太刀) — The Formal Attire of the Samurai Warrior Class

Itomaki tachi is a type of tachi koshirae (outer fitting), where thread is wrapped around the tsuka (grip) and the upper part of the saya (scabbard) from the waist upward. The thread materials include silk thread and hemp thread, with colors such as gold thread, silver thread, purple, and vermillion chosen according to rank.

This style was established from the late Kamakura period through the Muromachi period and was used as formal ceremonial dress for the samurai warrior class. In particular, it was used in scenes of "grand formal dress" coordinated with official costumes such as the sokutai and hitatare of Shogun and daimyo-class figures. The characteristic of itomaki tachi is that while maintaining a luxurious appearance, it also retains functionality as a practical sword, embodying the samurai aesthetic of "both literary and martial arts."

As representative existing examples of itomaki tachi, the "Gold and Copper Itomaki Tachi Koshirae (Important Cultural Property)" housed in the Tokyo National Museum can be cited. The splendid group of works from the Azuchi-Momoyama to early Edo period exemplify the imposing authority of daimyo families.

Kurourushi Tachi (黒漆太刀) — From the Main Role in Actual Combat to Samurai Ceremonial Dress

Kurourushi tachi is a tachi with a scabbard coated in black lacquer, representing the most widely used form of "combat sword" from the late Heian period through the Kamakura period. Black lacquer possesses high durability and does not easily reflect light, making it suitable for practical use in battle.

The image of a warrior in "black-cord-laced armor with a black-lacquered tachi" that appears in the Heike Monogatari and records of the Genpei War represents the typical armed style of this era. The koshirae of kurourushi tachi achieves a unified, rugged beauty by combining black-cord wrapping on the tsuka, black lacquer on the saya, and black-ground metalwork on the metal fittings.

From the late Kamakura period into the Nanbokucho period, the forms of practical combat tachi became more diverse, but kurourushi tachi also came to be repurposed for ceremonial use. In particular, the "kurourushi tachi koshirae" came to occupy an important position as votive swords for shrines and ceremonial swords for the samurai class, and many examples remain in shrines and museums throughout Japan today.

The kurourushi tachi koshirae of the "Tachi Unsigned (Honebami Toshiro)" housed in the Tokyo National Museum is known as a representative artifact of the Nanbokucho period.

Kazari Tachi (飾太刀) — The "Display Sword" Dedicated Exclusively to Ceremony

Kazari tachi is a tachi manufactured specialized for ceremonial and decorative purposes, without the assumption of use in actual combat. It was employed in court ceremonies, as votive offerings to shrines, and as gifts exchanged between daimyo.

The most striking characteristic of kazari tachi is its luxurious decoration. Gold, silver, precious stones, raden (mother-of-pearl inlay), and makie (decorative lacquer techniques) were lavished on the tsuka, saya, and metal fittings, achieving an extremely high level of craftsmanship. In fact, the blade of some kazari tachi receives only basic polishing, or wooden "wooden blades" are inserted. The value as "artistic work" and "symbol of authority" takes precedence over "function as a sword."

A representative form of kazari tachi is the "imperial envoy tachi of the Heian period." These are swords presented by the emperor through imperial envoys to subordinates, and similar artifacts exist among the treasures of the Shosoin. Additionally, major shrines such as Ise Shrine, Kasuga Taisha, and Sumiyoshi Taisha preserve kazari tachi donated by master craftsmen of various periods as treasures, representing the pinnacle of Japanese sword craftsmanship history.

Hyogo-gusari Tachi (兵庫鎖太刀) — An Elegant Form Beloved by Both Nobility and Warriors

Hyogo-gusari tachi is a form of tachi koshirae that uses a metal chain (hyogo-gusari) for the sageo (hanging cord) that suspends the tachi from the waist. In contrast to ordinary tachi, which are suspended by leather or silk braided cords, the use of a metal chain creates a distinctive elegance and gravitas.

The name "Hyogo" is said to derive from the armory storehouse (hyogo no kura), though this is not definitively confirmed. From the late Heian period through the Kamakura period, it was widely favored by both nobility and the samurai warrior class, and the extant masterpieces "Uesugi Tachi" and "Hojo Tachi" are both renowned works connected to samurai families. The substantial luster and elegance imparted by the metal chain were widely appreciated regardless of social status.

Existing examples of hyogo-gusari tachi are scarce, but artifacts from the Kamakura through Muromachi periods are preserved in the Kyoto National Museum and the treasure halls of Kasuga Taisha. Pieces in which the chain preservation is in good condition are particularly rare, attracting high attention among sword enthusiasts.

Kozukuri Tachi (古造太刀) and the Transition to Uchigatana

The form of tachi evolved with the times. The tachi of the late Heian to early Kamakura period is characterized by strong koshi-zori (waist curvature) and a relatively short blade length, a "small-form" (kozukuri) appearance. By the late Kamakura to Nanbokucho periods, the blade length increased, and the shape transformed into a wider, more imposing form.

Furthermore, from the mid-Muromachi period (late 15th century) onward, tachi were gradually replaced by the "uchigatana" (打刀). Uchigatana are worn with the blade facing upward, excelling at swift drawing and practical combat, and suited to the battle styles of the Sengoku period. Tachi survived as "ceremonial swords," "votive offerings to shrines," and "formal dress for daimyo," but their function as everyday carried swords transitioned to the uchigatana. The stylistic differences between tachi and uchigatana are discussed in detail in Tachi vs. Uchigatana: Comprehensive Comparison of Two Major Styles and Key Points for Appraisal.

Key Points for Distinguishing Types of Tachi

The principal points for determining the type of tachi can be summarized as follows:

• From the form of the koshirae: The material of the sageo (leather, silk braided cord, or metal chain), the material and wrapping method of the tsuka wrapping, the method of coating the saya (black lacquer, vermillion lacquer, raden, or makie), and the material and decorative technique of the metal fittings.
• From the characteristics of the blade: The position of the curvature (whether it is koshi-zori or chu-zori), the balance between blade length and width, the shape of the kissaki (point) (small kissaki, medium kissaki, or large kissaki), and the type of hamon (temper line).
• From the historical background: The estimated period of manufacture inferred from the mei (signature) or appraisal certificate.

The evolution of the form of tachi by era is summarized as follows.

Through its diverse forms, tachi embodies the fusion of Japanese samurai culture, court culture, and Shinto culture. Going beyond the simple understanding of "a long sword suspended from the waist," knowledge of the historical context underlying each form significantly deepens the depth of appreciation.