Kōta is a town located in Nukata District, Aichi Prefecture, in the Tōkai region of Japan. As of 1 October 2019, the town had an estimated population of 42,200 in 16,198 households, and a population density of 744 persons per km2. The total area of the town was 56.72 square kilometres (21.90 sq mi).

Nishio is a city located in Aichi Prefecture, in the Chūbu region of Japan. As of 1 October 2019, the city had an estimated population of 169,984 in 65,553 households, with a population density of 1,054 persons per km2. The total area of the city was 160.22 square kilometres (61.86 sq mi). It is a regional commercial and manufacturing center and the country's leading producer of powdered green tea.