data seto japanSeto, city, Aichi ken (prefecture), central Honshu, Japan, northeast of Nagoya. Seto, established about 1230, is known for its porcelain (Seto ware). Since the Meiji period (1868–1912),Portal Site of Official Statistics of Japan: Website that provides main statistical data in visually easy-to-understand manner: Report comprehensively summarizing government statistics