Masazane is transmitted as a disciple of the first-generation Sengo Muramasa, together with Masashige. Both smiths are closely related in workmanship; however, the consistently observes that Masazane's tends to be somewhat more tightly formed than Masashige's -- a distinction that serves as a reliable diagnostic point of differentiation within the Sengo group.
In , Masazane produces the typical of the late period, with somewhat wide and pronounced . The forging shows tightened overall and mixed with , accompanied by conspicuous . His characteristically features, in the lower half, a of mixed with that produces a -like impression, shifting above to with -- a method in which the and temper lines are largely in accord, a period characteristic frequently encountered among the Sengo group. The is bright, and with no slight breakdown evident in the and , the workmanship is described as excellent. In , the working manner can be considerably bolder: mixed with elements, vigorous , applied as if relying upon the ridge, and abundant in the -- what the describes as "bold and brimming with a combative spirit, brought to completion as a powerful piece."
One notable bears a provenance memorandum recording its bestowal upon Mizuno no Kami by the shogun, with the attribution deliberately altered to "Yamashiro Province Masazane" -- a circumlocution understood to reflect the Tokugawa house's well-known aversion to blades associated with Sengo Muramasa of Province.