Masamune’s art carried inland. Shizu Saburō Kaneuji began in the Yamato tradition at Tegai, then entered the forge of Masamune in Sagami — counted among the Ten Great Disciples. Relocating to Shizu in Mino Province, he renamed himself Kaneuji (兼氏) and fused Sōshū éclat with Yamato structure, founding the Shizu school. After him the line continued as Naoe-Shizu under Tametsugu and his successors, carrying the Sagami manner through the Nanbokuchō era into the heart of the Mino tradition.
The The Mino Shizu School (志津), active 1320–1450 in Mino Province across 47 documented smiths: 0 Kokuhō (National Treasures), 6 Jūbun, 14 Jūbi, 23 Tokubetsu Jūyō, 230 Jūyō.
Phase 1 · The Mino Shizu School (志津) · 1320 – 1450
Kaneuji (兼氏) — Mainline · 1319-1321. Jūbun, Jūbi, Tokujū, Jūyō. Shizu Saburō Kaneuji is traditionally identified as the Tegai smith Kanetsugu of the Yamato tradition who, after studying under Masamune of Sagami and attaining full maturity, relocated to Shizu in Mino Province, changed his name to Kaneuji, and forged swords there — thus acquiring the epithet "Shizu Saburō Kaneuji," commonly abbreviated simply to "Shizu." From early times he has been counted among the *Masamune Jittetsu* (Ten Great Disciples of Masamune), and among them he is regarded as one of the smiths whose style stands closest to that of Masamune himself. No dated inscriptions by Kaneuji are extant, but a date of Kōʼō 1 (1350) on a blade by his transmitted student Kanetsugu permits the inference that his period of activity extended from the end of the Kamakura period into the early Nanbokuchō period. It can further be surmised that exchange between Mino smiths and those of Yamato was frequent, and that this had a substantial impact on the stylistic formation of Mino workmanship. It is precisely in the way *Sōshū-den* elements are added to a *Yamato-den* foundation that his personal manner is found.
The distinguishing hallmarks of Shizu's work are consistently identified across NBTHK evaluations. The *kitae* is *itame-hada* mixed with *mokume* and *nagare-hada*, frequently showing a tendency toward *masame* — a conspicuous *masame-gokoro* within the grain that sets his forging apart from other Sōshū-den smiths. Fine *ji-nie* adheres thickly, and *chikei* enter with great frequency, producing a steel described as bright, clear, and possessed of a sense of transparency. The *hamon*, based on *ko-notare* mixed with *gunome* and *togariba*, is a defining characteristic: pointed forms within the gunome become conspicuous, and in places the gunome runs in a linked sequence. Along the *habuchi* appear *hotsure*, *kuichigai-ba*, and *yubashiri*, while *kinsuji* and *sunagashi* work repeatedly to yield the subtle fascination of *nie* breakdown. The *nie* is thickly applied, bright and clear, at times concentrating and at times breaking down to produce abundant variation. The *bōshi* characteristically turns back in a rounded manner — typically *ko-maru* — with vigorous *hakikake*, at times forming a flame-like (*kaen-jō*) appearance.
The NBTHK consistently places Shizu among the highest echelon of the Sōshū tradition. His finest works are described as displaying "a realm of workmanship that recalls the upper ranks of Sōshū masters," while the sparkling, lustrous *ha-nie* is identified as characteristic of "a superior level of Sōshū-den." Evaluations recurrently note that both *ji* and *ha* show "a graceful and excellent workmanship" and that the *nioiguchi* is "bright and clear" — the term *saeru* appearing as a consistent marker of quality. Works attributed to Shizu are praised for their dynamism and force, and superior examples are recognized as blades "worthy of admiration" that compellingly demonstrate the presence of pieces "brimming with a sense of dynamism" among Shizu attributions. The soundness and preservation (*kenzen*) of surviving examples is frequently noted alongside their excellence of workmanship (*shūsaku*, *yūhin*), affirming Shizu Kaneuji's enduring position as the foremost inheritor of Masamune's art.
Kanetomo (兼友) — Mainline · 1336-1340. Jūbi, Jūyō. Kanetomo is a name borne by several successive generations of smiths extending from the Nanbokucho period into the Muromachi period. The founder is regarded as one of the disciples of the first-generation Kaneuji, the celebrated Yamato-to-Mino smith who transmitted Soshu-den methods into Mino Province. When Kaneuji's group of pupils later relocated from Shizu in Mino to Naoe, they became collectively known as "Naoe Shizu," and Kanetomo is counted among the representative artisans of this lineage. Reference works (*meikan*) record a Kanetomo active around the Oan era (1368--1375) as a son of the first-generation Kanetsugu, and a further Kanetomo of Naoe Shizu active around the Oei era (1394--1428), indicating the name's continuity across multiple generations.
Kanetomo's characteristic workmanship centers on *itame-hada* mixed with *mokume*, with thickly adhering *ji-nie* and frequent *chikei* in the ground steel. His *hamon* typically features rounded *gunome* combined with *ko-notare* executed in *ko-nie-deki*, producing a temper line in which the *nioiguchi* tends toward a tight, crisp quality. In his finer works, *kinsuji* and *sunagashi* appear within both *ji* and *ha*, lending abundant internal activity. When working in *hira-zukuri* tanto of broad, slightly elongated proportions with thin *kasane* and shallow curvature, the pieces reflect the prevailing Nanbokucho Enbun--Joji-era aesthetic. At least one signed tanto survives as a designated Important Art Object, serving as a touchstone for attribution.
Among the Naoe Shizu smiths, Kanetomo is regarded as especially proficient in the effective combination of *gunome* and *notare* tempers, which in his best work display a clear brilliance described as *saeru*. His tanto and katana demonstrate both the Soshu-influenced vigor of the parent lineage and a refinement of forging that distinguishes his output from the broader Shizu group. Signed examples remain scarce, lending particular scholarly value to works that can be securely attributed through workmanship alone.
Tametsugu (爲繼) — Mainline · 1345-1350. Jūbi, Jūyō. Tametsugu is traditionally said to have been the son of Go Yoshihiro and to have studied under Norishige; however, the NBTHK consistently observes that "from the standpoint of chronology, there remains room for further examination." *Oshigata* preserve works signed "Echizen no Kuni Fujiwara Tametsugu" dated Enbun 2 (1357) and Oan 2 (1369), while an extant blade signed "Noshu ju Fujiwara Tametsugu" bears the date Oan 7 (1374). From these facts it is understood that "between Oan 2 and Oan 7 he moved from Echizen to Mino," placing his working life firmly in the Nanbokucho period across two provinces within the broader northern tradition.
In workmanship, Tametsugu "shows a forging in which *itame* appears with conspicuous standing grain," mixed with *mokume* and *nagare-hada*, with "thickly formed *ji-nie*" and frequent *chikei*. The steel characteristically displays "a somewhat blackish tone" -- a surface quality the NBTHK identifies as *Hokkoku-hada*, "the characteristic texture particular to works from Japan's northern regions." His tempering encompasses several modes: *midareba* with *notare* as the principal tone; *gunome-midare* with mixed *ko-notare*; and *suguha*-based patterns into which *gunome* is intermingled. In all these modes, "*hotsure* appears along the *habuchi*, *nie* adheres well," and *kinsuji* and *sunagashi* run vigorously. The *nioiguchi* "tends to be somewhat *shizumi*" -- a subdued quality that, combined with the dark forging, sets his work apart from the brighter *Soshu-den* masters he echoes. Stronger examples introduce *yubashiri*, *tobiyaki*, and *muneyaki*, and his *boshi* frequently terminates in vigorous *hakikake*, at times "becoming flame-like."
The NBTHK recognizes that Tametsugu's work "at first glance can recall the work of upper-ranked Soshu masters," yet consistently distinguishes it through the standing *itame*, the dark *kana-iro* tone, the *shizumi*-tending *nioiguchi*, and the "whitish, *kasu-dachi*-like appearance" termed *Hokkoku-mono*. Across his designated blades, the evaluative refrain is that "the characteristic features and merits of Tametsugu are fully manifested in both *ji* and *ha*." Several setsumei note the condition of his works as *kenzen* -- "sound and well-preserved" -- and emphasize the "forceful spirit" and "martial vigor" that pervade his output. One blade bears a cut-in inscription recording its use at the Summer Campaign of Osaka, attesting to the esteem in which these swords were held as practical weapons centuries after their making.
Kanetsugu (兼次) — Mainline · 1345-1350. Jūbi, Jūyō. Kanetsugu is the first-generation smith of the Naoe Shizu lineage in Mino Province, traditionally identified as either a son or a disciple of Shizu Saburo Kaneuji. Kaneuji himself, counted among the celebrated Ten Disciples of Masamune (*Masamune jittetsu*), came to reside in the Shizu area of Mino and established a flourishing school there. Subsequently, his students Kanetomo, Kanetsugu, Kaneshige, Kanenobu, and others relocated to Naoe within the same province and forged swords in that locale; accordingly, the smiths of this group are collectively referred to as Naoe Shizu. In signed works, the form of the character *kane* closely resembles that used by Kaneuji, suggesting an intimate master-disciple relationship. Kanetsugu is assigned to the Kanno era (from 1350), and a dated wakizashi bearing an inscription of Kanno 1 survives as an exceptionally important chronological anchor.
The workmanship of Kanetsugu operates within the Soshu tradition yet exhibits features particular to the Shizu lineage. The forging typically shows *itame-hada* mixed with *mokume* and *nagare-hada*, tending toward *hada-dachi*, with thick *ji-nie* and prominent *chikei*. The *hamon* is characteristically tempered in *ko-notare* mixed with *gunome* and *togariba*, frequently displaying a *saka*-tendency; *nie* adheres well, with *sunagashi* and *kinsuji* running through, and *uchi-noke* and *yubashiri* appearing to produce a powerful, compelling impression. The *boshi* is typically *notare-komi* or *midare-komi*, turning back with *hakikake* in a rounded return. Works attributed to Shizu proper show a manner closest to Masamune among the *jittetsu*, while Naoe Shizu pieces demonstrate a *nioiguchi* that is deep and bright, with fine *ko-nie* well adhering.
Signed works by Kanetsugu are exceedingly rare, and reliable examples number only a small handful. Each constitutes not only valuable reference material for identifying both this smith and the broader Naoe Shizu group, but also provides an important foundation for the study of the Shizu lineage as a whole. The finest examples display excellent clarity in both *jitetsu* and *hamon*, with a commanding sense of spirit that fully upholds the legacy of the Soshu-den as transmitted through Mino.
Kaneuji (兼氏) — Mainline · 1368-1375. Jūbi, Jūyō. Shizu Saburō Kaneuji is one of the most celebrated swordsmiths of the late Kamakura to Nanbokuchō periods, universally counted among the Ten Great Disciples of Masamune (*Masamune jittetsu*). Originally a member of the Yamato Tegai group, Kaneuji studied under Masamune of Sagami and subsequently took up residence at Shizu in Mino Province, from which locality he derived his appellation — accordingly, when one speaks simply of "Shizu," it signifies Kaneuji. Among the Ten Disciples, he is consistently regarded by the NBTHK as one of the smiths whose manner most closely approaches that of Masamune himself. His earliest works, produced before his period of study under Masamune and signed with the name Kanetsugu, are distinguished as "Yamato Shizu" and retain a pronounced Yamato flavor in both forging and temper. It is characteristic that, throughout his mature production, one can discern Yamato-style and Mino-style elements alongside his command of the Sagami tradition.
The *kitae* of Shizu is typically an *itame-hada* mixed with *mokume* and *nagare-hada*, frequently showing a tendency toward *masame* — a flowing, standing grain that is one of the principal diagnostic features by which his work is distinguished from that of pure Sōshū masters. Fine *ji-nie* adheres thickly and pervasively, with abundant *chikei* entering throughout, producing a steel that is characteristically clear and bright (*saeru*). In the finest examples, the forging displays a distinctive *urumi* — a moist, luminous softness in the iron. The *hamon* is fundamentally *notare*-based, mixing *gunome*, *ko-gunome*, *chōji*-like elements, and the pointed *togariba* forms that are especially diagnostic. Along the *habuchi* appear *hotsure*, *uchi-noke*, and *yubashiri*, with *nijūba*-like effects emerging where these activities converge. The *nie* is vigorous and thickly applied; *kinsuji* and *sunagashi* run profusely, displaying the subtle fascination of *nie* characteristic of the highest rank of the Sōshū tradition. A further hallmark is the tendency for the *gunome* to run in a linked sequence. In the upper half, the temper often becomes boldly *midare*, showing pronounced rises and falls that lend abundant variation. The *bōshi* characteristically tends toward *yakitsume* or turns back in *ō-maru* with vigorous *hakikake* and *nie-kuzure* — features that strongly bring out the distinctive character of this smith's work.
At a glance, a blade by Shizu displays a realm of workmanship that calls to mind the upper ranks of Sōshū masters, yet the presence of nagare-hada in the forging, the masame-inclined tendency of the *jihada*, and the linked gunome and togariba within the hamon are the essential characteristics by which his work is distinguished and affirmed. The NBTHK consistently praises the bright and clear *nioiguchi*, the beautifully thick *ha-nie* characteristic of superior Sōshū-tradition workmanship, and the overall vigor and presence of both *ji* and *ha*. His finest pieces are described as works of graceful excellence — powerful blades replete with points of appreciation, overflowing with brilliant flamboyance, and conveying a sense of commanding spirit. It is frequently noted as an additional virtue when both ji and ha remain *kenzen* — sound and well-preserved. Among the Ten Disciples, Shizu Saburō Kaneuji occupies a singular position: a smith who absorbed the full measure of his teacher's genius while retaining the indelible imprint of his Yamato origins and Mino residence, producing blades that are at once unmistakably of the Sagami tradition and distinctly, definitively his own.
Kanenobu (兼信) — Mainline · 1345-1350. Jūyō. Smith of the Mino Shizu School.
Other smiths
Naoshizu (直鎭) — Mainline · 1532-1555. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kanetsuna (兼綱) — Mainline · 1487-1489. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1362-1368. Smith of the Mino Shizu School.
Kanenaga (兼長) — Mainline · 1716-1736. Smith of the Mino Shizu School.
Kanenobu (兼延) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kanetomo (兼伴) — Mainline · 1467-1469. Smith of the Mino Shizu School.
Kanekiyo (兼清) — Mainline · 1362-1375. Smith of the Mino Shizu School.
Kanekuni (兼國) — Mainline · 1390-1394. Smith of the Mino Shizu School.
Kanenori (兼則) — Mainline · 1370-1372. Smith of the Mino Shizu School.
Donyu (道入) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kaneaki (兼秋) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kanehira (兼平) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1469-1487. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1532-1555. Smith of the Mino Shizu School.
Kaneie (兼宅) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kaneie (兼宅) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kaneishi (兼石) — Mainline · 1375-1381. Smith of the Mino Shizu School.
Kanekage (兼景) — Mainline · 1345-1350. Smith of the Mino Shizu School.
Kanekage (兼景) — Mainline · 1615-1624. Smith of the Mino Shizu School.
Kanekishi (兼岸) — Mainline · 1455-1457. Smith of the Mino Shizu School.
Kanemasa (兼方) — Mainline · 1444-1449. Smith of the Mino Shizu School.
Kanemasa (兼正) — Mainline · 1356-1361. Smith of the Mino Shizu School.
Kanemasa (兼正) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kanemasa (兼正) — Mainline · 1428-1429. Smith of the Mino Shizu School.
Kanemitsu (兼光) — Mainline · 1352-1356. Smith of the Mino Shizu School.
Kanenaga (兼長) — Mainline · 1362-1368. Smith of the Mino Shizu School.
Kanenami (兼並) — Mainline · 1444-1449. Smith of the Mino Shizu School.
Kanenao (兼直) — Mainline · 1379-1381. Smith of the Mino Shizu School.
Kanenobu (兼延) — Mainline · 1317-1319. Smith of the Mino Shizu School.
Kanenobu (兼延) — Mainline · 1390-1394. Smith of the Mino Shizu School.
Kanenobu (兼信) — Mainline · 1381-1384. Smith of the Mino Shizu School.
Kanenobukane (兼信金) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kanetsugu (兼繼) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kaneuji (兼氏) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kaneuji (包氏) — Mainline · 1350-1352. Smith of the Mino Shizu School.
Kanewaka (兼若) — Mainline · 1558-1570. Smith of the Mino Shizu School.
Moromune (師宗) — Mainline · 1356-1361. Smith of the Mino Shizu School.
Nagakane (長包) — Mainline · 1345-1350. Smith of the Mino Shizu School.
Nobukane (延兼) — Mainline · 1452-1455. Smith of the Mino Shizu School.
Live·Shizu lineage
志津
The Mino Shizu School
Masamune’s art carried inland. Shizu Saburō Kaneuji began in the Yamato tradition at Tegai, then entered the forge of Masamune in Sagami — counted among the Ten Great Disciples. Relocating to Shizu in Mino Province, he renamed himself Kaneuji (兼氏) and fused Sōshū éclat with Yamato structure, founding the Shizu school. After him the line continued as Naoe-Shizu under Tametsugu and his successors, carrying the Sagami manner through the Nanbokuchō era into the heart of the Mino tradition.
The The Mino Shizu School (志津), active 1320–1450 in Mino Province across 47 documented smiths: 0 Kokuhō (National Treasures), 6 Jūbun, 14 Jūbi, 23 Tokubetsu Jūyō, 230 Jūyō.
Phase 1 · The Mino Shizu School (志津) · 1320 – 1450
Kaneuji (兼氏) — Mainline · 1319-1321. Jūbun, Jūbi, Tokujū, Jūyō. Shizu Saburō Kaneuji is traditionally identified as the Tegai smith Kanetsugu of the Yamato tradition who, after studying under Masamune of Sagami and attaining full maturity, relocated to Shizu in Mino Province, changed his name to Kaneuji, and forged swords there — thus acquiring the epithet "Shizu Saburō Kaneuji," commonly abbreviated simply to "Shizu." From early times he has been counted among the *Masamune Jittetsu* (Ten Great Disciples of Masamune), and among them he is regarded as one of the smiths whose style stands closest to that of Masamune himself. No dated inscriptions by Kaneuji are extant, but a date of Kōʼō 1 (1350) on a blade by his transmitted student Kanetsugu permits the inference that his period of activity extended from the end of the Kamakura period into the early Nanbokuchō period. It can further be surmised that exchange between Mino smiths and those of Yamato was frequent, and that this had a substantial impact on the stylistic formation of Mino workmanship. It is precisely in the way *Sōshū-den* elements are added to a *Yamato-den* foundation that his personal manner is found.
The distinguishing hallmarks of Shizu's work are consistently identified across NBTHK evaluations. The *kitae* is *itame-hada* mixed with *mokume* and *nagare-hada*, frequently showing a tendency toward *masame* — a conspicuous *masame-gokoro* within the grain that sets his forging apart from other Sōshū-den smiths. Fine *ji-nie* adheres thickly, and *chikei* enter with great frequency, producing a steel described as bright, clear, and possessed of a sense of transparency. The *hamon*, based on *ko-notare* mixed with *gunome* and *togariba*, is a defining characteristic: pointed forms within the gunome become conspicuous, and in places the gunome runs in a linked sequence. Along the *habuchi* appear *hotsure*, *kuichigai-ba*, and *yubashiri*, while *kinsuji* and *sunagashi* work repeatedly to yield the subtle fascination of *nie* breakdown. The *nie* is thickly applied, bright and clear, at times concentrating and at times breaking down to produce abundant variation. The *bōshi* characteristically turns back in a rounded manner — typically *ko-maru* — with vigorous *hakikake*, at times forming a flame-like (*kaen-jō*) appearance.
The NBTHK consistently places Shizu among the highest echelon of the Sōshū tradition. His finest works are described as displaying "a realm of workmanship that recalls the upper ranks of Sōshū masters," while the sparkling, lustrous *ha-nie* is identified as characteristic of "a superior level of Sōshū-den." Evaluations recurrently note that both *ji* and *ha* show "a graceful and excellent workmanship" and that the *nioiguchi* is "bright and clear" — the term *saeru* appearing as a consistent marker of quality. Works attributed to Shizu are praised for their dynamism and force, and superior examples are recognized as blades "worthy of admiration" that compellingly demonstrate the presence of pieces "brimming with a sense of dynamism" among Shizu attributions. The soundness and preservation (*kenzen*) of surviving examples is frequently noted alongside their excellence of workmanship (*shūsaku*, *yūhin*), affirming Shizu Kaneuji's enduring position as the foremost inheritor of Masamune's art.
Kanetomo (兼友) — Mainline · 1336-1340. Jūbi, Jūyō. Kanetomo is a name borne by several successive generations of smiths extending from the Nanbokucho period into the Muromachi period. The founder is regarded as one of the disciples of the first-generation Kaneuji, the celebrated Yamato-to-Mino smith who transmitted Soshu-den methods into Mino Province. When Kaneuji's group of pupils later relocated from Shizu in Mino to Naoe, they became collectively known as "Naoe Shizu," and Kanetomo is counted among the representative artisans of this lineage. Reference works (*meikan*) record a Kanetomo active around the Oan era (1368--1375) as a son of the first-generation Kanetsugu, and a further Kanetomo of Naoe Shizu active around the Oei era (1394--1428), indicating the name's continuity across multiple generations.
Kanetomo's characteristic workmanship centers on *itame-hada* mixed with *mokume*, with thickly adhering *ji-nie* and frequent *chikei* in the ground steel. His *hamon* typically features rounded *gunome* combined with *ko-notare* executed in *ko-nie-deki*, producing a temper line in which the *nioiguchi* tends toward a tight, crisp quality. In his finer works, *kinsuji* and *sunagashi* appear within both *ji* and *ha*, lending abundant internal activity. When working in *hira-zukuri* tanto of broad, slightly elongated proportions with thin *kasane* and shallow curvature, the pieces reflect the prevailing Nanbokucho Enbun--Joji-era aesthetic. At least one signed tanto survives as a designated Important Art Object, serving as a touchstone for attribution.
Among the Naoe Shizu smiths, Kanetomo is regarded as especially proficient in the effective combination of *gunome* and *notare* tempers, which in his best work display a clear brilliance described as *saeru*. His tanto and katana demonstrate both the Soshu-influenced vigor of the parent lineage and a refinement of forging that distinguishes his output from the broader Shizu group. Signed examples remain scarce, lending particular scholarly value to works that can be securely attributed through workmanship alone.
Tametsugu (爲繼) — Mainline · 1345-1350. Jūbi, Jūyō. Tametsugu is traditionally said to have been the son of Go Yoshihiro and to have studied under Norishige; however, the NBTHK consistently observes that "from the standpoint of chronology, there remains room for further examination." *Oshigata* preserve works signed "Echizen no Kuni Fujiwara Tametsugu" dated Enbun 2 (1357) and Oan 2 (1369), while an extant blade signed "Noshu ju Fujiwara Tametsugu" bears the date Oan 7 (1374). From these facts it is understood that "between Oan 2 and Oan 7 he moved from Echizen to Mino," placing his working life firmly in the Nanbokucho period across two provinces within the broader northern tradition.
In workmanship, Tametsugu "shows a forging in which *itame* appears with conspicuous standing grain," mixed with *mokume* and *nagare-hada*, with "thickly formed *ji-nie*" and frequent *chikei*. The steel characteristically displays "a somewhat blackish tone" -- a surface quality the NBTHK identifies as *Hokkoku-hada*, "the characteristic texture particular to works from Japan's northern regions." His tempering encompasses several modes: *midareba* with *notare* as the principal tone; *gunome-midare* with mixed *ko-notare*; and *suguha*-based patterns into which *gunome* is intermingled. In all these modes, "*hotsure* appears along the *habuchi*, *nie* adheres well," and *kinsuji* and *sunagashi* run vigorously. The *nioiguchi* "tends to be somewhat *shizumi*" -- a subdued quality that, combined with the dark forging, sets his work apart from the brighter *Soshu-den* masters he echoes. Stronger examples introduce *yubashiri*, *tobiyaki*, and *muneyaki*, and his *boshi* frequently terminates in vigorous *hakikake*, at times "becoming flame-like."
The NBTHK recognizes that Tametsugu's work "at first glance can recall the work of upper-ranked Soshu masters," yet consistently distinguishes it through the standing *itame*, the dark *kana-iro* tone, the *shizumi*-tending *nioiguchi*, and the "whitish, *kasu-dachi*-like appearance" termed *Hokkoku-mono*. Across his designated blades, the evaluative refrain is that "the characteristic features and merits of Tametsugu are fully manifested in both *ji* and *ha*." Several setsumei note the condition of his works as *kenzen* -- "sound and well-preserved" -- and emphasize the "forceful spirit" and "martial vigor" that pervade his output. One blade bears a cut-in inscription recording its use at the Summer Campaign of Osaka, attesting to the esteem in which these swords were held as practical weapons centuries after their making.
Kanetsugu (兼次) — Mainline · 1345-1350. Jūbi, Jūyō. Kanetsugu is the first-generation smith of the Naoe Shizu lineage in Mino Province, traditionally identified as either a son or a disciple of Shizu Saburo Kaneuji. Kaneuji himself, counted among the celebrated Ten Disciples of Masamune (*Masamune jittetsu*), came to reside in the Shizu area of Mino and established a flourishing school there. Subsequently, his students Kanetomo, Kanetsugu, Kaneshige, Kanenobu, and others relocated to Naoe within the same province and forged swords in that locale; accordingly, the smiths of this group are collectively referred to as Naoe Shizu. In signed works, the form of the character *kane* closely resembles that used by Kaneuji, suggesting an intimate master-disciple relationship. Kanetsugu is assigned to the Kanno era (from 1350), and a dated wakizashi bearing an inscription of Kanno 1 survives as an exceptionally important chronological anchor.
The workmanship of Kanetsugu operates within the Soshu tradition yet exhibits features particular to the Shizu lineage. The forging typically shows *itame-hada* mixed with *mokume* and *nagare-hada*, tending toward *hada-dachi*, with thick *ji-nie* and prominent *chikei*. The *hamon* is characteristically tempered in *ko-notare* mixed with *gunome* and *togariba*, frequently displaying a *saka*-tendency; *nie* adheres well, with *sunagashi* and *kinsuji* running through, and *uchi-noke* and *yubashiri* appearing to produce a powerful, compelling impression. The *boshi* is typically *notare-komi* or *midare-komi*, turning back with *hakikake* in a rounded return. Works attributed to Shizu proper show a manner closest to Masamune among the *jittetsu*, while Naoe Shizu pieces demonstrate a *nioiguchi* that is deep and bright, with fine *ko-nie* well adhering.
Signed works by Kanetsugu are exceedingly rare, and reliable examples number only a small handful. Each constitutes not only valuable reference material for identifying both this smith and the broader Naoe Shizu group, but also provides an important foundation for the study of the Shizu lineage as a whole. The finest examples display excellent clarity in both *jitetsu* and *hamon*, with a commanding sense of spirit that fully upholds the legacy of the Soshu-den as transmitted through Mino.
Kaneuji (兼氏) — Mainline · 1368-1375. Jūbi, Jūyō. Shizu Saburō Kaneuji is one of the most celebrated swordsmiths of the late Kamakura to Nanbokuchō periods, universally counted among the Ten Great Disciples of Masamune (*Masamune jittetsu*). Originally a member of the Yamato Tegai group, Kaneuji studied under Masamune of Sagami and subsequently took up residence at Shizu in Mino Province, from which locality he derived his appellation — accordingly, when one speaks simply of "Shizu," it signifies Kaneuji. Among the Ten Disciples, he is consistently regarded by the NBTHK as one of the smiths whose manner most closely approaches that of Masamune himself. His earliest works, produced before his period of study under Masamune and signed with the name Kanetsugu, are distinguished as "Yamato Shizu" and retain a pronounced Yamato flavor in both forging and temper. It is characteristic that, throughout his mature production, one can discern Yamato-style and Mino-style elements alongside his command of the Sagami tradition.
The *kitae* of Shizu is typically an *itame-hada* mixed with *mokume* and *nagare-hada*, frequently showing a tendency toward *masame* — a flowing, standing grain that is one of the principal diagnostic features by which his work is distinguished from that of pure Sōshū masters. Fine *ji-nie* adheres thickly and pervasively, with abundant *chikei* entering throughout, producing a steel that is characteristically clear and bright (*saeru*). In the finest examples, the forging displays a distinctive *urumi* — a moist, luminous softness in the iron. The *hamon* is fundamentally *notare*-based, mixing *gunome*, *ko-gunome*, *chōji*-like elements, and the pointed *togariba* forms that are especially diagnostic. Along the *habuchi* appear *hotsure*, *uchi-noke*, and *yubashiri*, with *nijūba*-like effects emerging where these activities converge. The *nie* is vigorous and thickly applied; *kinsuji* and *sunagashi* run profusely, displaying the subtle fascination of *nie* characteristic of the highest rank of the Sōshū tradition. A further hallmark is the tendency for the *gunome* to run in a linked sequence. In the upper half, the temper often becomes boldly *midare*, showing pronounced rises and falls that lend abundant variation. The *bōshi* characteristically tends toward *yakitsume* or turns back in *ō-maru* with vigorous *hakikake* and *nie-kuzure* — features that strongly bring out the distinctive character of this smith's work.
At a glance, a blade by Shizu displays a realm of workmanship that calls to mind the upper ranks of Sōshū masters, yet the presence of nagare-hada in the forging, the masame-inclined tendency of the *jihada*, and the linked gunome and togariba within the hamon are the essential characteristics by which his work is distinguished and affirmed. The NBTHK consistently praises the bright and clear *nioiguchi*, the beautifully thick *ha-nie* characteristic of superior Sōshū-tradition workmanship, and the overall vigor and presence of both *ji* and *ha*. His finest pieces are described as works of graceful excellence — powerful blades replete with points of appreciation, overflowing with brilliant flamboyance, and conveying a sense of commanding spirit. It is frequently noted as an additional virtue when both ji and ha remain *kenzen* — sound and well-preserved. Among the Ten Disciples, Shizu Saburō Kaneuji occupies a singular position: a smith who absorbed the full measure of his teacher's genius while retaining the indelible imprint of his Yamato origins and Mino residence, producing blades that are at once unmistakably of the Sagami tradition and distinctly, definitively his own.
Kanenobu (兼信) — Mainline · 1345-1350. Jūyō. Smith of the Mino Shizu School.
Other smiths
Naoshizu (直鎭) — Mainline · 1532-1555. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kanetsuna (兼綱) — Mainline · 1487-1489. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1362-1368. Smith of the Mino Shizu School.
Kanenaga (兼長) — Mainline · 1716-1736. Smith of the Mino Shizu School.
Kanenobu (兼延) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kanetomo (兼伴) — Mainline · 1467-1469. Smith of the Mino Shizu School.
Kanekiyo (兼清) — Mainline · 1362-1375. Smith of the Mino Shizu School.
Kanekuni (兼國) — Mainline · 1390-1394. Smith of the Mino Shizu School.
Kanenori (兼則) — Mainline · 1370-1372. Smith of the Mino Shizu School.
Donyu (道入) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kaneaki (兼秋) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kanehira (兼平) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1469-1487. Smith of the Mino Shizu School.
Kanehisa (兼久) — Mainline · 1532-1555. Smith of the Mino Shizu School.
Kaneie (兼宅) — Mainline · 1368-1375. Smith of the Mino Shizu School.
Kaneie (兼宅) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kaneishi (兼石) — Mainline · 1375-1381. Smith of the Mino Shizu School.
Kanekage (兼景) — Mainline · 1345-1350. Smith of the Mino Shizu School.
Kanekage (兼景) — Mainline · 1615-1624. Smith of the Mino Shizu School.
Kanekishi (兼岸) — Mainline · 1455-1457. Smith of the Mino Shizu School.
Kanemasa (兼方) — Mainline · 1444-1449. Smith of the Mino Shizu School.
Kanemasa (兼正) — Mainline · 1356-1361. Smith of the Mino Shizu School.
Kanemasa (兼正) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kanemasa (兼正) — Mainline · 1428-1429. Smith of the Mino Shizu School.
Kanemitsu (兼光) — Mainline · 1352-1356. Smith of the Mino Shizu School.
Kanenaga (兼長) — Mainline · 1362-1368. Smith of the Mino Shizu School.
Kanenami (兼並) — Mainline · 1444-1449. Smith of the Mino Shizu School.
Kanenao (兼直) — Mainline · 1379-1381. Smith of the Mino Shizu School.
Kanenobu (兼延) — Mainline · 1317-1319. Smith of the Mino Shizu School.
Kanenobu (兼延) — Mainline · 1390-1394. Smith of the Mino Shizu School.
Kanenobu (兼信) — Mainline · 1381-1384. Smith of the Mino Shizu School.
Kanenobukane (兼信金) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kanetsugu (兼繼) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kaneuji (兼氏) — Mainline · 1394-1428. Smith of the Mino Shizu School.
Kaneuji (包氏) — Mainline · 1350-1352. Smith of the Mino Shizu School.
Kanewaka (兼若) — Mainline · 1558-1570. Smith of the Mino Shizu School.
Moromune (師宗) — Mainline · 1356-1361. Smith of the Mino Shizu School.
Nagakane (長包) — Mainline · 1345-1350. Smith of the Mino Shizu School.
Nobukane (延兼) — Mainline · 1452-1455. Smith of the Mino Shizu School.