Futo

Futo City is the main setting for Kamen Rider Double. It is an ecologically friendly city with the windmills providing power for the windy city and the people live in harmony. Its mascot is an anthromorphic pinwheel named Futo-kun invented by Kirihiko Sonozaki.

However, the rest of the Sonozaki Family sell Gaia Memories to corrupt people who use them to become Dopants to proceed in humanity's evolution. The Dopants commit crimes with the police powerless to stop them.