Hiromi was a disciple of Kunihiro, regarded since the period as having once used the name Kunihiro himself -- though modern research correctly identifies him as an independent student. Together with Osumi Daijo Masahiro, he is counted among Kunihiro's pupils whose work most closely approaches the master's own style. The two characters "Fujiwara" in Hiromi's inscriptions correspond entirely to those of Kunihiro, and the character hiro is also strikingly similar. It is likely that throughout his life he served in the capacity of (substitute making) and (substitute signing) for his master, and consequently few signed works survive.
Hiromi's forging displays the distinctive (rough-textured) quality characteristic of the group: an mixed with , with standing grain, plentiful , and . The steel carries a blackish tone. His typically takes the form of mixed with , with deep , well-adhering , and the appearance of and . In some works and are present, with appearing in places. The enters in and tends toward a pointed form with . In these points, "characteristics of the group appear throughout," and the cadence of the shows an unbroken affinity with the style of Kunihiro's so-called works.
Among the already small number of surviving signed pieces, his oeuvre encompasses , , and a notably rare -- the last described as possessing an archaic flavor in which "both and are outstanding." The consistently emphasizes that his workmanship most closely resembles Kunihiro's own, and it may be inferred that among Kunihiro's signed works "there must be a considerable number that are, in fact, Hiromi's and ."