Ōtoyo is a town located in Nagaoka District, Kōchi Prefecture, Japan. As of 1 August 2022, the town had an estimated population of 3277 in 1968 households and a population density of 10 persons per km². The total area of the town is 315.06 square kilometres (121.65 sq mi).

Motoyama is a town located in Nagaoka District, Kōchi Prefecture, Japan. As of 31 July 2022, the town had an estimated population of 3‚318 in 1858 households and a population density of 25 persons per km2. The total area of the town is 134.22 square kilometres (51.82 sq mi). Motoyama has been named one of The Most Beautiful Villages in Japan.