Tsuneie is transmitted as a swordsmith of the branch within the school of Province. Although the and related signature references place the first generation in the mid- period around the Shoo era (1288-1293), and examples bearing -era dates of the period are also recorded, extant works that predate the Oei era are exceedingly rare. Tsuneie stands alongside Iesuke as one of the capable smiths of Oei-, coming after the foundational masters Morimitsu and Yasumitsu, and his workmanship closely resembles that of Yasumitsu from the period. Despite being recorded as "" and transmitted as lineage, the observes that there are no grounds — whether in workmanship, the character of the signature, or any other point — by which one could distinguish his production from work.
Tsuneie's forging characteristically shows closely worked, with adhering and clearly standing — hallmarks that plainly display the style of Oei-. His tempering frequently features with opened bases into which is mixed, often with small and , and a that tends toward tightness and is — bright and clear. However, the further notes that Tsuneie was also adept at producing quiet tempers, demonstrating a versatility beyond his more florid work. Both and often show a build that is long in proportion to a standard , with notably thick , lending a dignified and imposing presence.
The finest designated examples by Tsuneie are praised as especially well-executed works, excellent in both and , with a splendidly florid temper of and . The consistently commends those pieces in which both and are — sound and well-preserved — and in which the workmanship is well ordered. The well-refined is described as bright and clear, and the dignified shape with its thick is deemed particularly appealing. Tsuneie's position as a representative smith of Oei-era is firmly established, sharing common traits with his contemporaries while maintaining a workmanship of consistent refinement.