Yoshikane (吉包) is a name borne by several smiths active in Province from the late period through the early period, all working within the lineage. The consistently note that "Yoshikane appears to have had several generations," with later smiths of the name producing works datable to the Kenchō era of the mid- period. A separate Yoshikane is also found among the Fukuoka school, though "works by the -school Yoshikane are rarely extant." The two lines are distinguished by their signatures and workmanship: Yoshikane pieces typically bear a "comparatively small" two-character signature, sometimes with the addition of (作), while the line tends toward "somewhat larger-cut signatures" with a more florid impression. Surviving signed works under this name are described as "comparatively numerous," making Yoshikane one of the more widely attested names among smiths.
The characteristic manner of Yoshikane is remarkably consistent across designated examples. The is forged in , frequently mixed with , and shows a pronounced tendency toward standing grain — — a feature the identifies as especially diagnostic. Plentiful adheres, with entering, and a faint — variously described as , jibara-, or — may appear, though it remains restrained compared to the vivid of work. The is rooted in mixed with , , and at times , forming a broad, softly undulating temper; and enter well, and the formation characteristically shows a -tendency in the — a subdued, sunken quality. The is typically turning back in , often with at the tip. Later-generation works display a wider , a more flamboyant , and a richer presence, shifting toward the bolder aesthetic of the early period. -otoshi at the base, while "not limited to this smith alone, is something that is often encountered when examining pieces" and appears among Yoshikane's works as well.
Across the , Yoshikane's blades are praised for their sound condition and excellent workmanship. The repeatedly affirms that "both and are " — sound and well-preserved — and describes the forging as displaying "a classical and refined manner" that "fully displays the characteristic flavor of work." The standing grain, broad -based temper, and subdued together form a diagnostic constellation, such that even unsigned and heavily shortened blades can be attributed with confidence: "the traditional appraisal to Yoshikane is entirely convincing." One is described as possessing "a stately presence and a high degree of classical refinement," while another's "excellent-quality forging centered on " and "broad, softly inflected is deeply appealing." Among the smiths, Yoshikane occupies a distinctive position as a prolific and consistently accomplished craftsman whose works embody the restrained, -laden elegance of the tradition at its finest.