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Hokkaido (northernmost of the four main islands of Japan)October 2020
Kumamoto prefecture (Kyushu)October 2017
Tokyo Metropolitan areaOctober 2007
Ibaraki prefecture (Kantou area)November 2023
Mie prefecture (Kinki area)November 2022
Aichi prefecture (Chuubu area)November 2021
Toyama prefecture (Hokuriku area)November 2021
Kanagawa prefecture (Kantou area)November 2021
Yamaguchi prefecture (Chuugoku area)November 2020
Fukuoka prefecture (Kyushu)November 2018
Chiba prefecture (Kantou area)November 2018
Kawaguchi-cho 1-chome, Fukuyama City, Hiroshima PrefectureMay 2024
Mie prefecture (Kinki area)May 2023
Fukuoka prefecture (Kyushu)May 2022
Ibaraki prefecture (Kantou area)May 2019
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