Japanese Prefecture Flag

Please find out a correct answer from the flag of 47 all prefectures in Japan. If was answered correctly, the link of Wikipedia is waiting in collection menu. Hokkaido Aomori Prefecture Iwate Prefecture Miyagi Prefecture Akita Prefecture Yamagata Prefecture Fukushima Prefecture Ibaraki Prefecture Tochigi Prefecture Gumma Prefecture Saitama Prefecture Chiba Prefecture Tokyo Kanagawa Prefecture Niigata Prefecture Toyama Prefecture Ishikawa Prefecture Fukui Prefecture Yamanashi Prefecture Nagano Pr...