* Image is for illustrative purposes only.Aoe Tsunetsugu's Tachi
青江恒次の太刀
Also known as: Aoe Tsunetsugu Tachi (Kamakura Period — A Leading Master of the Aoe School)
Description
Aoe Tsunetsugu was a swordsmith of the Aoe school, based in Bitchu Province (present-day Okayama Prefecture), who flourished from the mid to late Kamakura period. The Aoe school's defining characteristic is its distinctive ji-tetsu pattern known as sunagashi (sand-flow), and Tsunetsugu's works exemplify this typical beauty. Sunagashi refers to a ji-kei (ground pattern) in which fine iron particles appear to flow like flowing sand through the ji-tetsu, treasured since ancient times as a distinctive characteristic unique to the Aoe lineage. While Tsunetsugu's tachi possess the characteristically strong koshi-zori (waist curve) typical of the Kamakura period, the hamon displays gentle ko-midare (small irregular patterns) or suguha (straight blade), with fine nie (particles) attached, presenting an elegant finish. Beyond the sunagashi in the ji-tetsu, connoisseurs particularly value the even ji-nie that creates a lustrous, refined beauty. In the context of the Mongol invasions (1274 and 1281), Tsunetsugu's style—maintaining practical tachi quality at a high standard suitable for actual combat while pursuing artistic refinement as a work of art—embodied the fusion of martial purpose and aesthetic beauty, and is positioned as a paradigm of the era. Multiple existing works by Tsunetsugu survive, including Important Cultural Property designations in the Kyushu National Museum collection, making them essential primary sources for Aoe school research.
Legends & Stories
A legend surrounding Aoe Tsunetsugu tells of a river deity (kawa no kami) appearing to him while he was selecting iron sand at a riverbank in Bitchu, declaring: 'Blades forged from this iron sand shall protect the nation.' From then on, Tsunetsugu is said to have performed a Shinto ritual at the riverbank each year, selecting the finest iron sand before beginning his forging work. Another legend recounts that on the eve of the Mongol invasions, a samurai warrior dispatched to Hakata Bay wielding an Aoe Tsunetsugu tachi came ashore without a single Mongol arrow finding its mark, giving rise to the belief that the Aoe sunagashi possesses spiritual power to repel national calamity. Today, Tsunetsugu's blades remain enshrined in shrines throughout Bitchu, where they are venerated as guardian swords protecting the region's prosperity and national peace.