The seven cities and towns of Yamaguchi City, Ube City, Hagi City, Hofu City, Mine City, Sanyo Onoda City, and Tsuwano Town in Shimane Prefecture were designated as ``Yamaguchi Prefecture Central Collaborative Cities'' in March 2017 based on the national cooperative urban area concept. formed a "sphere". The Yamaguchi Prefectural Central Collaborative Urban Area will be nicknamed the "Yamaguchi Dream Corridor," and based on the "Yamaguchi Prefectural Central Collaborative Urban Area Vision," this will lead to the creation of further vitality and improved livability throughout the area. We are moving forward with these efforts, aiming to create areas where people can continue to live with peace of mind in all areas within the area, and where people want to live.