Kunitsugu of the Uda school in is fixed in time by a signed dated the twelfth month of Bunmei 17 (1485), designated at the fourteenth session together with a two-character signed ; a second followed at the twenty-eighth session. The published sources introduce the school in the same words on both of the earlier papers: 「宇多派は文保の頃、大和国宇多郡から移住し、古入道国光を祖としたと伝え、越中国宇多郡で栄えた一派である」 (the Uda school is said to have moved from Uda district in Yamato around the Bunpo era, to have taken Ko-Nyudo Kunimitsu as its founder, and to have flourished in Uda district of ). The later paper adds that the school continued into the era and that the period, when many smiths appeared and left a large body of work, was its most prosperous time.
The is with a carved within a on the flat face. Its is standing somewhat, with a blackish tone, and the temper is mixed with , with clustered and frequent ; the runs and turns back with a pointed tendency. The tang is , with the maker's signature on the and the date on the . The sources write that 「この派の槍は現存するものが少く、姿も出来も優れ」 (few spears of this school survive, and this one excels in both form and workmanship), and value the Bunmei date both for the study of the Uda school and because signed spears from before the period are not seen.
The two show the school's . The first, with an tang and a large two-character signature straddling the single peg hole, has a shallow curvature and a , with well-attached , and a large mixed with and , and , frequent and , with appearing often; the runs , turns back somewhat long and is swept with . Of it the sources say 「この国次は二字銘ながら室町時代のこの派の作として出来がよく、同時代の打刀姿であり、同派の特色が見られる」 (though signed with two characters, this Kunitsugu is a well-made work of the school, in the shape of its day, showing the features of the group). The second is wide, with a somewhat heavy , a shallow curvature and an , carved with on both sides. Its stands somewhat with a coarse, surface, and a touch of ; the is with and , and , and uneven that gathers densely, while the is slightly irregular with a tip and on both faces. The sources single out its tang as well: 「茎尻が張るのも室町時代の宇多派の特色」 (the flaring tang tip is also a feature of the Uda school).
Across the three works Kunitsugu appears as a late fifteenth-century Uda smith of standing and -laden tempers with active , signing in two characters on his and in full with the school name on his dated spear.