Unji (Unrui)

雲次（雲類）

Also known as: Unji Tachi

Smith

Unji (Unrui, Ukan school)

Era

Late Kamakura through Nanboku-chō period

Type

tachi

Designation

Important Cultural Property

Location

Japanese Sword Museum (Sumida Ward, Tokyo)

Description

Unji is a swordsmith of the Ukan school (also called "Unrui") who was active in Bizen Province (present-day Okayama Prefecture) from the late Kamakura period through the Nanboku-chō period. The Unrui school produced such smiths as Unsei and Unji, and is known for its distinctive style that blended the Bizen tradition with Yamashiro influences. Unji's tachi has a blade length of approximately 78 centimeters and retains a commanding tachi form, characterized by a broad blade and pronounced koshi-zori curvature with a majestic appearance. The hamon features large chōji-midare with densely arranged pendant-shaped chōji formations in a solemn composition. Within the blade, nie-ashi and yō are vibrantly active, with kinsuji appearing in places. The jigane displays the characteristic Bizen-tradition forging: tightly packed ko-itame grain with a bright, clear surface, pervaded with uniform and distinct ji-nie. The tang bears the signature "Unji" and is designated an Important Cultural Property (the example housed in the Japanese Sword Museum is said to have been a beloved blade of Date Masamune). With excellent preservation, it serves as a precious example that faithfully conveys the technical characteristics of the Unrui school.

Legends & Stories

Kasuga Taisha is a grand shrine dedicated to the tutelary deity of the Fujiwara clan and served as a sacred site commanding the devotion of samurai warrior society during the Kamakura period. The Unji tachi is said to have been dedicated to Kasuga Taisha by a samurai who, after barely surviving a fierce battle, made an offering in gratitude, saying 'This blade saved my life.' Later, when priests at Kasuga Taisha were organizing the tachi, they discovered a pattern of 'clouds' appearing on the blade's surface. The priests interpreted this as a divine mark of Kasuga's deity and have since safeguarded it with special reverence. To this day, Kasuga Taisha opens its treasure museum on ceremonial dates according to the traditional lunar calendar, publicly displaying the collection of dedicated blades including the Unji tachi.