Naritaka is counted among the smiths of the Ko-Bizen group, believed to have been active from the close of the Heian period into the early Kamakura period. His precise lineage within the school remains unestablished, and he is not ranked among the most widely celebrated Ko-Bizen names. Nevertheless, the NBTHK examiner Honma Junji observed that when compared with such contemporaries as Sukekane and Yoshikane, Naritaka is in no way inferior. Signed works are exceedingly scarce; among them, the tachi preserved in the Nasu family — famed as the personal sword of Nasu no Yoichi Munetaka — stands as perhaps the most historically significant, having been transmitted together with its original tachi-koshirae across some eight centuries.

Naritaka's extant works display the archetypal Ko-Bizen construction. The forging is typically itame-hada intermixed with mokume, suffused with ji-nie and chikei, upon which midare-utsuri rises conspicuously. The hamon is fundamentally suguha-based, incorporating ko-midare and ko-choji with well-attached ko-nie; along the temper border, frequent uchi-noke and nijuba appear, accompanied by yubashiri, sunagashi, and kinsuji. The boshi is characteristically sugu with ko-maru and a modest turnback. In sugata, his tachi are slender with pronounced koshizori, evident funbari, and a compact ko-kissaki — a silhouette that conveys the refined elegance of the late Heian aesthetic.

Naritaka's work is valued both for its technical accomplishment and its exceptional rarity. The survival of any signed tachi from this early period is noteworthy; that several bear his two-character mei in a period when many blades have long since lost their signatures through shortening underscores the esteem in which these pieces have been held across generations of custodians.