Morie (also read Moriie) takes his name from the locality of in Province, a subdivision within the village of where he maintained his forge. Scholars have long debated whether the name represents one smith or two successive generations: the first is conventionally placed as a contemporary of Mitsutada, and the second as active alongside Nagamitsu, with the earliest dated work bearing the inscription Bun'ei 9 (1272) and signed examples extending into the era. No blade by Morie or his followers, including Sanemori and Masamori, has yet been found signed "-ju"; instead, they inscribe "-ju," reinforcing the understanding that was an administrative ward within the smithing district rather than a separate center. Through his pupils Morishige and Motoshige, the line continued to exert influence on production well beyond the mid- period, and extant works provide indispensable material for substantiating this genealogical chain.
Morie's forging is characterized by that conspicuously stands in the grain, a quality the descriptions consistently term . Into this active surface, fine adheres thickly and enter with frequency, while vivid rises throughout the blade, lending the an unmistakable depth of activity. His signature tempering pattern is built on , within which the distinctive - — so called for its resemblance to clustered frog spawn — appears prominently alongside -, , and elements tending toward shapes. The hardened edge is with , enriched by and , and the is characteristically bright and full, often conveying a soft, quality. While the overwhelming majority of extant works display this flamboyant , a notable late-period departs from convention by employing as its primary element, a tempering vocabulary associated with final-phase and thus valuable evidence for dating his later career.
Though Morie's workmanship is broadly cognate with the mainline masters of his era, the pronounced standing grain, the persistent activity, and the exuberant - establish a distinct artistic identity within the tradition. His oeuvre spans an unusually wide range of forms — , , , , , and the exceedingly rare — and several blades preserve their original , offering documentary value for the study of -period and signature conventions. Variations in his , particularly the relationship between large-character and small-character inscription styles and the occasional appending of a , remain central to the unresolved question of generational differentiation and continue to attract scholarly attention. Works attributed to this smith consistently exhibit ample and sound preservation, and the finest examples achieve a balance of gorgeous decorative effect and dignified restraint that places Morie among the most accomplished smiths working in the shadow of the great lineage.