Yasuhiro was a swordsmith of the group in Province, active during the late period at roughly the time as Kagemitsu and Chikakage. He is recorded as styling himself Ukon Shogen and Sahyoe no Jo. Very few of his works survive today; however, dated examples bearing the era names Shodan (1299--1302) and Tokuji (1306--1308) are known. From the manner of his signature and related features, he is considered to belong to a lineage different from that of the orthodox main line represented by Nagamitsu and Kagemitsu, suggesting an independent branch within the broader tradition.
Yasuhiro's extant works are predominantly in with , typically exhibiting deep and well-preserved . The is an that tends to stand in the grain, with adhering and appearing distinctly. His is characteristically based on mixed with small , into which and enter; forms along the tempered edge, and and appear. The is typically straight, turning in . In comparison with contemporary works of the main line, his and display a somewhat more rustic character -- described in the scholarly literature as possessing a yashu quality -- though his finest pieces achieve a level of workmanship that does not fall short of the orthodox line.
Despite the rarity of his surviving body of work, Yasuhiro occupies a position of scholarly interest precisely because he illuminates a facet of production outside the dominant Nagamitsu--Kagemitsu lineage. His blades are noted as -- sound and well-preserved -- and pieces bearing his full title inscription, such as the dated Tokuji 2 (1307) , hold significant documentary value. A number of his works carry by the family, attesting to their longstanding recognition among connoisseurs of the Japanese sword.