Nagashige (長重) was a swordsmith of Province, active in the early period from the center. He is consistently placed alongside Chogi as a leading figure of the Soden- (-transmission ) style, a lineage distinct from the Kanemitsu group that represented the main line. An older tradition held that Nagashige was Chogi's younger brother; however, the has repeatedly noted that surviving dated works by Nagashige — bearing inscriptions of Kenmu 1 and 2 (1334–1335) and Koei 1 (1342) — predate any known dated example by Chogi, whose earliest extant work cannot be traced back further than the Shohei era. For this reason, "the view that Nagashige was in fact the elder brother of Chogi is today regarded as the more persuasive theory." Extant signed works by Nagashige are extremely few, lending particular documentary value to those pieces that bear his .
Nagashige's forging is characteristically mixed with , frequently tending toward (standing grain), with and fine entering well. A faint to distinct is a recurring presence. His is most often mixed with , , and , executed in ; and appear vigorously, while , , and occasional enliven the . The is noted as deep and bright. The critical distinction from Chogi, cited across multiple designations, is that Nagashige's temper line runs lower and in smaller-patterned with gentler rhythmic undulation, whereas Chogi's work tends toward more conspicuous height variation in the upper half. His typically enters in with a turnback, often showing . In , his long swords display the bold proportions characteristic of the era — wide , thick , deep with a tendency, and extended — while certain works, including the dated Kenmu 2 and the dated Koei 1, reveal a quieter, -based mode that demonstrates the breadth of his working range.
The consistently describes Nagashige's work as "fully displaying the characteristic features of Soden- workmanship" and praises his finest blades as "overflowing with martial vigor." Several pieces are singled out as — sound and well-preserved — with no breakdown in either or . His and are recognized for possessing qualities that resonate with the work of closely related smiths, including Chogi and Kanemitsu, yet the gentler and stronger in both and remain the reliable grounds for distinguishing his hand. Nagashige stands as one of the foremost practitioners of the -influenced manner, a smith whose small surviving corpus nevertheless defines a distinct and recognizable artistic identity within the tradition.