A Masterpiece of Kamakura Swordcraft: The Peony Arabesque Hyōgo Chain Tachi Mounting

On the sacred island of Omishima in the Seto Inland Sea, a Kamakura-period sword mounting gleams with the soft luster of gilded copper and intricate peony arabesque carvings. The Botan Karakusa-mon Hyōgo-gusari Tachi Koshirae (牡丹唐草文兵庫鎖太刀拵) — a tachi sword mounting adorned with peony scrollwork and a distinctive chain suspension system — is one of eight National Treasures preserved at Oyamazumi Shrine, the grand head shrine of over ten thousand Yamazumi and Mishima shrines across Japan. Designated a National Treasure in 1955, this exquisite piece of metalwork represents the pinnacle of medieval Japanese sword-fitting artistry and carries with it a tale of imperial ambition and tragic heroism.

What Is a Hyōgo-gusari Tachi Koshirae?

In Japanese sword culture, the term koshirae (拵) refers to the complete external fittings of a sword — the scabbard, handle, guard, and all accompanying metal fittings. A tachi is a type of long sword that was slung edge-downward at the waist, and the "Hyōgo-gusari" (兵庫鎖) style refers to the distinctive method of suspending the sword using finely woven metal chains rather than the usual cloth or leather cords.

The Hyōgo chain tachi style became fashionable among high-ranking samurai and court nobles from the late Heian period through the Kamakura period (late 12th to 14th centuries). The scabbard was typically covered in decorative metalwork, and the chains added both an air of martial splendor and practical strength. As the Kamakura period progressed, many Hyōgo chain tachi were simplified and offered as sacred dedications to Shinto shrines, transforming from weapons of war into treasured objects of devotion.

Design and Craftsmanship

This National Treasure is a tour de force of Kamakura-period metalwork. With a total length of 96.3 cm, every surface of the mounting is unified by the elegant botan karakusa (peony arabesque) motif — a design that symbolizes wealth, honor, and refinement in East Asian art.

The metal fittings throughout the mounting are crafted from kondō (gilded copper) and feature peony arabesque carvings in high relief. The scabbard's flat surface plates are adorned with the same motif rendered in delicate hair-line engraving (kebori). The pommel (kashira) and the covering ring (fukurin) bear the peony arabesque design in carved-away relief (sukibori), while four pairs of decorative rivets (kazari-byō) on the handle display peony blooms in openwork carving.

The handle itself is covered with white sharkskin (shirozame), a traditional material prized for its textured grip and lustrous appearance. The sword-hanging chains — the hallmark of the Hyōgo-gusari style — are woven from three strands of fine metal links, creating a flat, flexible band of remarkable craftsmanship. The fastening ornaments at the ends of the chains feature peony flowers in openwork carving, maintaining the unified decorative program.

Some elements, including the mouth fitting (kuchi-kanamono) and the edge fitting (fuchi), are later replacements, which is common for objects of this age. Even so, the overall integrity and artistic coherence of the mounting remain exceptional.

Why Was It Designated a National Treasure?

The Botan Karakusa-mon Hyōgo-gusari Tachi Koshirae was first designated an Important Cultural Property in 1901, and was elevated to full National Treasure status in 1955. Several factors contributed to this distinction.

First, the mounting is an outstanding representative of the Hyōgo-gusari tachi style — a category of sword fitting that flourished specifically during the Kamakura period and holds deep significance in the history of Japanese arms and armor. Second, the decorative program is remarkably unified: the peony arabesque motif is carried consistently across every metal component, from the pommel to the chain fasteners, demonstrating a level of artistic planning and execution that is rare even among surviving Kamakura-era masterworks. Third, the metalworking techniques on display — including high-relief carving, hair-line engraving, openwork, and gilding — showcase the full range of skills commanded by medieval Japanese metalworkers. Finally, the mounting's association with Prince Moriyoshi and its preservation at one of Japan's most revered shrines lend it considerable historical and cultural significance.

The Tragic Prince: Moriyoshi and the Kenmu Restoration

According to shrine tradition, this sword mounting was dedicated to Oyamazumi Shrine by Prince Moriyoshi (護良親王, 1308–1335), also known as Prince Morinaga. Moriyoshi was a son of Emperor Go-Daigo and one of the most dramatic figures of Japan's turbulent 14th century.

Originally trained as a Tendai Buddhist monk and installed as head abbot of the great Enryaku-ji temple on Mount Hiei, Moriyoshi abandoned the priesthood to fight alongside his father in the ultimately successful campaign to overthrow the Kamakura shogunate. Alongside the legendary warrior Kusunoki Masashige, Moriyoshi rallied loyalist forces from his mountain strongholds in Yoshino and played a decisive role in bringing about the fall of the Hōjō regime in 1333.

During the ensuing Kenmu Restoration — Emperor Go-Daigo's brief attempt to restore direct imperial rule — Moriyoshi was appointed Seii Taishōgun (Generalissimo). However, this appointment enraged the powerful warlord Ashikaga Takauji, who believed the title should be his. Accused of plotting rebellion, Moriyoshi was arrested, imprisoned in Kamakura, and ultimately executed at the age of just twenty-seven — a tragic casualty of the political rivalries that would soon plunge Japan into the era of the Northern and Southern Courts.

The dedication of this magnificent sword mounting to Oyamazumi Shrine reflects Moriyoshi's devotion to the gods of war and his prayer for divine favor in the great struggles of his time.

Oyamazumi Shrine: Japan's Greatest Treasury of Arms and Armor

Oyamazumi Shrine stands on the western coast of Omishima Island, the largest island along the Shimanami Kaido cycling route connecting Honshu and Shikoku. Known as the "Guardian Deity of All Japan" (Nihon Sōchinju), the shrine enshrines Ōyamatsumi-no-kami, a deity of mountains, the sea, and warfare.

Because of its deep association with martial prowess, generations of warriors — from the Genji and Heike clans of the 12th century to the Murakami naval lords of the Seto Inland Sea — dedicated their finest weapons and armor here in prayer for victory. As a result, Oyamazumi Shrine holds an astonishing collection: approximately 40% of all nationally designated armor and arms in Japan are preserved here. The shrine's treasure halls house 8 National Treasures and 76 Important Cultural Properties, making it one of the most extraordinary concentrations of historic martial culture anywhere in the world.

Among the other National Treasures displayed alongside the tachi mounting are suits of armor traditionally attributed to Minamoto no Yoritomo, Minamoto no Yoshitsune, and other legendary figures, as well as great swords and a rare Tang-dynasty bronze mirror.

Highlights for Visitors

Visiting Oyamazumi Shrine and viewing the Botan Karakusa-mon Hyōgo-gusari Tachi Koshirae is an experience that immerses you in the world of medieval Japan. Here are a few things to look for and enjoy during your visit.

In the treasure hall, the tachi mounting is displayed with its Hyōgo chains suspended to show how the sword would have hung naturally at a warrior's side — a thoughtful presentation that brings the object to life. Take time to study the peony arabesque carvings up close: the consistency and precision of the decoration across every fitting reveal the extraordinary skill of the Kamakura-period metalworkers.

The shrine grounds themselves are breathtaking, with ancient camphor trees — some said to be over 2,600 years old — forming a canopy of green that filters the sunlight. The main hall and worship hall, rebuilt in 1427, are Important Cultural Properties in their own right. And just beyond the shrine, the "Living Tree Gate" (Ikikinogomon), a camphor tree with a natural tunnel through its roots, leads to the Inner Sanctuary — a walk that feels like stepping into another era.

Omishima Island is also a beloved stop on the Shimanami Kaido cycling route, so visitors can combine a shrine visit with one of the most scenic cycling experiences in all of Japan.

Nearby Attractions

Omishima and the surrounding Shimanami Kaido islands offer many attractions beyond the shrine. The Toyo Ito Museum of Architecture and the Ken Iwata Mother and Child Museum are both located on Omishima, offering a contrast between contemporary art and ancient heritage. The Maregrassia Omishima marine spa offers hot-spring bathing with views over the Seto Inland Sea. Cycling enthusiasts can rent bicycles on the island and ride sections of the famous Shimanami Kaido bridge route, which offers stunning views of islands, bridges, and whirlpool currents. The nearby islands of Hakatajima and Ikuchijima provide additional temples, beaches, and citrus groves to explore.