Koshi City in Kumamoto Prefecture is a region that focuses on both agriculture and industry, resulting in a very well-balanced economy. Furthermore, with many research institutes scattered throughout the city and well-equipped water and sewerage systems, Koshi City is highly regarded by many as the most livable environment in Kumamoto Prefecture. This livability has led to a rapid population growth. Local specialties include apple mangoes, watermelons, and strawberries. The popular tourist spot is the Futagoyama Stone Tool Manufacturing Site, where numerous stone tools have been excavated, allowing visitors to imagine the landscape as it was 3,000 years ago. As such, this region is a fascinating place that offers a wide variety of experiences.