United States
Japan ‧ Kagawa Prefecture
United States ‧ California
United States ‧ City of Houston, Texas
Federal Republic of Germany
Japan ‧ Kaga City, Ishikawa Prefecture
Republic of South Africa ‧ Johannesburg
Republic of Korea ‧ Incheon Metropolitan City
United States ‧ City of Manhattan Beach, Los Angeles County, California
Czech Republic ‧ Brno
Japan ‧ Miyagi Prefecture
Japan ‧ Miyazaki Prefecture
Brazil ‧ Guarulhos City
Japan
United States ‧ Fulton County, Georgia
Japan ‧ Narita City, Chiba Prefecture