Are the cities on honshu located in the mountain or coastal plains?

The cities on Honshu, Japan's largest island, are primarily located in coastal plains rather than mountainous areas. Major urban centers like Tokyo and Osaka are situated in lowland regions that provide access to the sea and facilitate trade and transport. While there are cities in mountainous areas, such as Nagano, most of Honshu's population and economic activity are concentrated in the coastal plains.