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),How many travelers visit Japan? Visitor Arrivals provides fures trend of foren nationals traveling to Japan by year, month and the purpose of visit. A breakdown by countryarea is