The calmness of Seto Inland Sea, located in western Japan, will send your worries away. One thing that has been firmly supporting lives in this area is stone. The stone walls of the famous Osaka Castle are made of one million pieces of stone, most of which were granite quarried from the islands in the Seto Inland Sea, and shipped to parts of Japan. In this episode, we travel to the coastal area of the Seto Inland Sea, where life involves around reliable yet warm stones.