Japan
United Kingdom
Republic of Korea ‧ Gumi City, North Gyeongsang Province
Japan ‧ Miyazaki Prefecture
Japan ‧ Kagawa Prefecture
Czech Republic ‧ City of Brno, South Moravian Region
Japan ‧ Chiba Prefecture
Republic of Korea ‧ Daegu Metropolitan City
Republic of Finland ‧ Helsinki
Japan ‧ Eniwa City, Hokkaido
Federal Republic of Germany ‧ Hannover
French Republic
United States ‧ San Bernardino County, California
Republic of Korea ‧ Mokpo City, South Jeolla Province
Japan ‧ Tokushima Prefecture