Mitsuyo of Miike heads one of the great names of Chikugo, and the published sources fix his standing in a single sentence: the founder, Denta Mitsuyo, is a renowned master of the late period whose representative work is the Ōdenta of the Maeda house, one of the Tenka-goken, the five most celebrated swords of Japan. The descriptions are equally plain about how little of his own hand survives. Among authentically signed work, they state, 'none exists today apart from the single Ōdenta', the later blades cut with the Mitsuyo signature being the work of smiths who inherited the name. So the name is the lineage. Mitsuyo was not one man but a succession, the signature borne from the period into the , and the designated work that comes down to us is read by the as the school manner carried intact rather than as the founder's own blades. The smith stands, in consequence, in a rare double light: a maker famous for one unrepeatable masterpiece, the Ōdenta, and at the time the head of a recognizable Kyūshū hand traced across three centuries of inherited work.
That hand is a flowing, soft-looking manner the published sources hold to a quiet register. Over an mixed with that flows and stands somewhat, adhering, the descriptions linger longest on the itself, calling it a surface 'sticky and, in a sense, very soft to the eye', one that inclines toward a whitish tone with a rising on the broader blades. The temper is built on : a slender, fine on the work and a carrying on the , adhering well, with and and, in places, , and . The published sources note that even where the is otherwise bright the tends to settle, describing it as a temper 'whose takes on a subdued cast'. Against this restrained and , the one feature the descriptions single out as the school's own is the carving, and they return to it as the surest mark of the name.
The is the grand early figure the school is known for, a broad , , wide in and wide in the , of moderate with a deep and a compact ; on the longest surviving examples it has been shortened to an , the original signature lost and the attribution carried instead by an inlaid name on the shortened . Across the forging the runs conspicuously, the published record describing a steel in which 'the flows abundantly with adhering' before it settles into that soft, whitish . The runs straight and turns in a calm , or on one it tempers to a with a slight . On both faces the carving is a wide run as kaki-nagashi, with an accompanying on the , and it is here that the descriptions locate the school's individuality, writing that 'a personality of the line can be discerned in its preference for carving wide, comparatively shallow '.
Because the name spans three centuries, the published sources order the work not by date but by manner and by the attesting inscription. The surviving designated , the descriptions are careful to say, do not date back as far as the late ; yet their , and carving display the school's characteristics, so that the attestations upon them are judged sound and the blades placed broadly at the end of the period. Those attestations are themselves part of the record. One bears a gold-inlaid Mitsuyo that the descriptions read as an authentication 'by such authorities as Kōchū'; another carries a large gold-powder Miike Mitsuyo and a red notation that the house valued it, in 1, at seven of gold, the descriptions affirming that 'the gold-powder attestation is appropriate'. The signed , a wide piece with a boldly cut two-character signature, the calls 'sound, the workmanship in both and good'. The whole make, founder and successors alike, the descriptions trace to the Ōdenta and class as 'common to early Kyūshū work'.
What sets the Miike hand apart from the schools its quiet might otherwise suggest is the and the groove. A measured in belongs to several traditions, and on the alone a Yamashiro or blade keeps a clear, bright steel; the Miike instead whitens and softens into the , sticky character the published sources name, so that the soft and the wide shallow together pull the work back to Chikugo. The descriptions read the line as part of the broad family of early Kyūshū smiths, founded by Denta Mitsuyo rather than descending from a named teacher, its inheritance visible less in the founder's own blades, of which only the Ōdenta is known, than in the unbroken transmission of the name and its traits.
For the collector the reckoning follows from the rarity of the founder and the scattering of the name. Mitsuyo carries no National Treasure within reach and a heavy weight of designation around the one that stands above all: the Ōdenta is the founder's representative work, 'known as the representative piece, transmitted in the Maeda house', and it is patrimony, never offered. Two Important Cultural Properties carry the name in public and sacred keeping rather than on the market, among them the Sohaya-no-tsurugi, a blade of Tokugawa Ieyasu held at the Kunōzan Tōshōgū, and a preserved at Honmyō-. Of the blades that survive in the wider record, one signed is held in the Seikadō Bunko Art Museum and a in the Tokyo National Museum, so that most of his work, like the Ōdenta, is gathered into shrines, temples and long-standing collections. Behind these stand the three blades in the tier that the papers attest, a small number of recorded whereabouts, of which a privately held Mitsuyo is among the rarer things a collector could hope to encounter, coming to market only seldom and as a landmark when it does. He is the Chikugo master known to the world through one unrepeatable treasure, and recognized, wherever the name was carried, by a soft whitish and a wide shallow groove.