長船長義
Osafune Chogi
Also known as: Pinnacle of Osafune in the Nanbokuchō Era; Perfecter of the Ōkissaki; Suguha Chogi
Description
Osafune Chogi is one of the great masters of the Nanbokuchō period (14th century) — the era of the Great Southern and Northern Court War — working at the peak of the Bizen Osafune school's output of massive, long-pointed ōdachi (great swords) demanded by the prolonged civil war. What distinguishes Chogi from contemporaries like the celebrated Kanemitsu is his paradoxical aesthetic choice: he combined the large bodies and ōkissaki (big points) of the turbulent age with suguha (straight) hamon — the most tranquil of all hamon — creating blades of extraordinary tension between powerful form and serene line. His steel surface shows the bright, vivid utsuri-mapped itame of classic Bizen, while his long-inscribed dated blades (naming him as 'Bizen-no-Kuni Osafune Chogi') provide important benchmarks for studying the period. The contrast between Chogi's straight-edged serenity and Kanemitsu's turbulent ōmidare hamon represents the full aesthetic range of the Nanbokuchō Bizen school at its apex.
Legends & Stories
Osafune Chogi worked during the Nanbokuchō civil war — 56 years of warfare between the Southern Court (legitimate descendants of Emperor Go-Daigo) and the Northern Court (backed by the Ashikaga shogunate) — a conflict that tore Japan apart and drove demand for the massive ōdachi (great swords) that characterize the era. In this context, Chogi's consistent choice of suguha (straight hamon) was a remarkable act of aesthetic counter-statement: the most turbulent era of Japanese medieval history, embodied not in turbulent hamon but in the quietest possible line. This paradox — titanic blade with serene soul — has made Chogi's work a perennial object of philosophical commentary among connoisseurs: the 'Zen empty-mind' interpretation of straight hamon on enormous bodies; the 'stillness within the storm' reading of a master's refusal to let the age's violence dictate his aesthetic. The later tradition of 'Chogi-utsushi' (blades made in conscious homage to Chogi's style) through the Muromachi, Momoyama, and Edo periods testifies to the lasting authority of his distinctive vision.