Kunimura is regarded as the founder of the school of Province. According to the prevailing tradition, he was the son of Hiromura of the Yamato Senjuin school and became the son-in-law of Kuniyuki of Kyōto, thus transmitted as Kuniyuki's maternal grandson. He is also said to have studied under Kunitoshi before relocating to the Kumafu area of Kikuchi District in , where the lineage he established flourished greatly from the late period through the period. From his circle emerged many highly accomplished smiths — Kuniyoshi, Kunitoki, Kuniyasu, Kunitomo, Kunisuke, Kuninobu, Kunitsuna, and others — forming one of the most prolific provincial schools of its era. His extant works are limited to ; to date no or other forms are known.
The workmanship of the school generally does not exhibit strongly differentiated individual styles among its members and broadly resembles that of the Yamashiro school. However, distinguishing characteristics may be cited: in the forging, a noticeable tendency toward stands out and the often appears somewhat whitish, frequently displaying ; the shows a with a -inclined (subdued) tendency, and the activities within the tempered edge are comparatively calm and gentle; moreover, the rounded form at the tip of the tends toward a somewhat larger roundness while the turnback is shallow. Within this school, Kunimura in particular is noted for a distinctive : comparatively long blades in which the taper from to is especially conspicuous, with pronounced , marked , and a form concluding in . His , inherited from the tradition, displays a tight with calm , and the — a densely forged mixed with and areas of flowing grain — produces a refined, deep- temper line with a bright and clear . A number of his blades also show within the tempered area, and many examples bear carved , sometimes accompanied by or .
The repeatedly characterizes Kunimura's finest works as displaying both and that clearly manifest the special characteristics of the group, while his particular provides sufficient basis to narrow the appraisal specifically to this smith even among unsigned blades. His is described as producing a profound, subdued, and refined flavor — an elegant temper accompanied by finely applied and a bright that together yield a blade of high dignity. Several of his surviving are praised for retaining or near- condition at imposing lengths, and blades in (sound and well-preserved) state are singled out for the seiryō (excellent quality) of their from base through tip. While it is noted that among the finest works of Kuniyoshi and Kunitoki there are pieces that surpass Kunimura, his position as the progenitor of this prolific tradition and the consistent scholarly refinement of his workmanship secure his standing as a smith of the first importance within the lineage.