Yoshiie is a smith of the school of Yamashiro Province, long transmitted in sword literature as either a son or disciple of the celebrated Munechika. Modern scholarship, however, has moved away from a direct familial connection: the has consistently noted that when one considers the body of signed works and their stylistic character, it is difficult to maintain a direct link to Munechika, and Yoshiie is more appropriately understood as a smith working within that lineage during the late to early period. A persistent source of confusion in the historical record is the existence of a namesake active within the Fukuoka school of Province during the mid- period. Since the era, works by the two smiths have been conflated, and distinguishing between them remains a matter of ongoing appraisal. One traditional criterion holds that blades bearing the three-character signature "Yoshiie " belong to the school while those with the two-character "Yoshiie" are of origin, though the has cautioned that signature form alone is not definitive. Attribution rests ultimately on a holistic reading of workmanship, steel quality, and the overall character of the blade.
Yoshiie's work is defined by a deeply archaic elegance that the repeatedly characterizes as possessing a "Kyoto character." His forging is typically a tightly packed with fine adhering thickly and running through the ground steel, yielding a surface of exceptional clarity. A softly expressed is frequently observed, reinforcing the refined Yamashiro aesthetic. The is most often grounded in mixed with , with and entering well; at the , intermittent and may appear, lending a distinctive vitality that examiners have identified as a hallmark of the school. Thick adheres throughout, and fine and contribute to a temper described as bright and clear. Some works exhibit a -based temper with gentle undulations, accompanied by deep and well-adhering , demonstrating breadth within a consistently restrained idiom. The ranges from with vigorous and strong to a quieter straight form with , often showing a -like tendency that examiners have noted as a characteristic point of appreciation.
Yoshiie occupies an important position in the study of early Yamashiro sword-making as one of the few smiths bridging the classical tradition into the period. His blades characteristically display slender proportions with pronounced , marked , and —the hallmarks of elegant late form—yet several designated examples show a slightly widened body with less tapering toward the tip, suggesting activity extending into the early transition. The has consistently praised the overall (sound and well-preserved) condition of his surviving works, and his blades have been transmitted within distinguished collections including the Shimazu family of Kajiki, the Ikeda family of Okayama, and the Imperial Household. One , presented to Emperor Meiji by the Hachisuka family, remains in the imperial collection. The blade bearing the "Yoshiie " attests to the enduring regard in which his name was held at the time of shortening, and the re-chiseling of a signature as "Tenza"—a term associated with an emperor's sword—speaks to the veneration accorded these works across centuries of Japanese sword culture.