Kai is a city located in Yamanashi Prefecture, Japan. As of 31 December 2021, the city had an estimated population of 73,626, and a population density of 1,100 persons per km². The total area of the city is 71.95 square kilometres (27.78 sq mi).

Shōwa is a town located in Yamanashi Prefecture, Japan. As of 31 May 2019, the town had an estimated population of 20,338 in 8768 households and a population density of 2200 per km2. The total area of the town is 9.08 square kilometres (3.51 sq mi).