The Ayanokoji school takes its name from the Ayanokoji district of Kyoto, where smiths such as Sadatoshi and Sadayoshi resided and forged blades during the period. Sword reference works traditionally place Sadatoshi around the Bun'ei era (1264-1275), and one persistent tradition relates that he lived near Kuniyuki and that the two produced (substitute works) for one another. However, the consistently observes that extant works by this group possess "an archaic flavor that seems to follow the working range of the old Kyo-mono and Gojo lineages," and at their most refined recall the manner of Kuniyasu. This archaic quality has led to the repeated assessment that the school's output predates the conventionally accepted chronology, and that any point of contact between Sadatoshi and Kuniyuki would fall in "Sadatoshi's later years and Kuniyuki's early period." Some -period genealogies further list smiths such as Sadaie, Sadatsugu, and Ieyasu within the lineage, extending the school's activity from the period through the Oei era.
The hallmark of Ayanokoji workmanship is a of densely packed, intricately complex small-patterned mixing , , and . At the , minute patches of additional tempering appear in dotted succession, creating the distinctive -like effect that the regards as a defining signature of the group. The characteristically shows an (moist, soft) tendency, while and run vigorously throughout. The forging is typically mixed with and , bearing thick , well-entering , and prominent . The frequently displays vigorous , at times taking on a flame-like (-style) aspect before ending in . In form, school works favor an elegant, archaic with deep , evident , marked taper from base to tip, and a compact . The also notes a distinctive detail in certain blades: that form what are termed "Kyo reverse " (Kyo ), a subtlety that further separates this school from superficially similar work.
Across decades of designation sessions, the 's evaluative language for Ayanokoji blades has remained remarkably consistent, centering on the interplay of restraint and vitality within the school's fine-grained aesthetic. Works are praised for that is "intricately animated and undergoes fine variations," for interior activities that are "abundant" despite the small scale of patterning, and for a martial vigor that emerges within an outwardly subdued idiom. The school's finest examples are those in which both and remain (sound and well-preserved), where excellent forms a durable hamaguri-ba, and where the blade retains the archaic elegance of its original silhouette. The Ayanokoji tradition thus occupies a distinctive position within the Yamashiro lineage: rooted in the oldest Kyo-mono forging heritage yet displaying a complex, quietly dynamic temperament that the consistently describes as possessing "elevated tone and dignity."