Japanese Prefecture Flag 1.1

Please find out a correct answer from the flag of 47 all prefectures in Japan.
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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 Prefecture
Gifu Prefecture
Shizuoka Prefecture
Aichi Prefecture
Mie Prefecture
Shiga Prefecture
Kyoto
Osaka
Hyogo Prefecture
Nara Prefecture
Wakayama Prefecture
Tottori Prefecture
Shimane Prefecture
Okayama Prefecture
Hiroshima Prefecture
Yamaguchi Prefecture
Tokushima Prefecture
Kagawa Prefecture
Ehime Prefecture
Kochi Prefecture
Fukuoka Prefecture
Saga Prefecture
Nagasaki Prefecture
Kumamoto Prefecture
Oita Prefecture
Miyazaki Prefecture
Kagoshima Prefecture
Okinawa Prefecture