Yoshimichi is the most celebrated name of the Mishina school, the Kyoto-rooted shinto line founded by a son of Kanemichi of Seki. The first-generation Tanba no Kami Yoshimichi and his brothers Iga no Kami Kinmichi and Etchu no Kami Masatoshi are named together in the published sources as masters of the Sanpin lineage, the three smiths who carried Mishina work to the front rank of the early Edo period. This record gathers the Osaka branch of that name. At its center stands the shodai Osaka Tanba no Kami Yoshimichi, born in Keicho 3 and styled Sanpin Kin'emon, the second son of the Kyoto shodai who moved to Osaka and became the founder of the Osaka-Tanba line. A katana the published record assigns to a second-generation Yoshimichi, whose paper opens on the Kyoto shodai's biography, is recorded under the Kyoto second generation. Where the elder Kinmichi and the younger Masatoshi worked diversely, Yoshimichi held to one signature manner, and it is that manner the school is remembered by.
That manner is the sudare-ba, the bamboo-blind temper. Layered sunagashi and kinsuji are drawn through a notare and gunome midare until the temper stripes into parallel bands like the slats of a hanging reed blind, and the published sources call it the school's hallmark, the Osaka-Tanba line handling it more often and more skilfully than any other style. On a wide, slightly elongated, thick-kasane hira-zukuri wakizashi of Keicho-shinto shape, the shodai opens the temper with a long straight yakidashi at the koshimoto and then widens the yakihaba above it, building over a ko-notare base mixed with gunome into a flamboyant large midare. Long, vigorous yubashiri run through it, the sunagashi layers in double and triple bands until it stripes into the sudare-ba, ashi enter, strong nie gathers and clumps unevenly, long kinsuji appear in places, and muneyaki and tobiyaki are added. The boshi rises shallow and pointed in a tsukiage, swept with frequent hakikake into a flame shape and run down long. The published sources read the whole as bolder and more flamboyant than usual, of his hallmark style yet with "something that calls to mind the Kyoto shodai Tanba no Kami Yoshimichi"[[c:1]].
The jigane carries the temper. On the shodai's wakizashi the kitae is a compact ko-itame mixed with mokume, the ji-nie adhering thickly and exceedingly fine, fine chikei entering well, the hada flowing and standing a little in places. The yakidashi itself is a study of its own. The published sources distinguish the shodai's straight sudare-ba yakidashi from the broadening Osaka yakidashi, noting that here the yakihaba keeps an even width as it rises rather than spreading toward the upper blade, a point of recognition within the Osaka-Tanba hand. The temper is the constant; the build and the strength of the nie vary.
The name is read by hand and by signature rather than by a single dated chronology. The Osaka Tanba shodai is the prime sudare-ba hand.
Within the school the line is best placed by its own signature. Of the sudare-ba the sources write that the line "excelled above all in the sudare-ba, the house specialty"[[c:2]], and the shodai's straight, even yakidashi and pointed, flame-swept boshi distinguish his hand from the broadening Osaka yakidashi of his neighbours. Against the Kyoto shodai he is most easily confused and most carefully separated: because the Osaka line cut no chrysanthemum crest while the Kyoto line did from the second generation on, the published sources give the character 守 of the signature as the decisive point, its 寸 element cut straight down on Osaka work and slanting on Kyoto work. The sources are honest about the line's later course, observing that "as the generations descended"[[c:3]] the manner grew more technical and more uniform, the temper settling toward a single pattern as the individuality of the founders thinned.
The Osaka shodai is rated Jō saku by Fujishiro, and two blades on this record stand in the Jūyō tier and two more in the Imperial collection, none in a higher grade. Provenance is sparse but includes the Imperial collection, the kind of patrimony that is preserved rather than traded. There are no National Treasures or Important Cultural Properties here, and the holdings are few, so a designated Osaka-Tanba Yoshimichi does not appear often. When one does, it is most often a Jūyō wakizashi of the hira-zukuri Keichō-shintō build, and it reaches a private collection only from time to time. For a name carried by several generations under one signature, each surviving designated work is a documented point on the line, and the sudare-ba on a sound blade remains the surest mark by which this Osaka branch of the Mishina school is known.