An anime based on the tokusatsu franchise Kamen Rider is expected to premiere in the Summer of 2022.
The anime is based off the manga Kamen Rider: Fuuto Pi which is an ongoing series that began in 2018. The manga is a direct sequel to the live action Kamen Rider W.
Kamen Rider: Fuuto Pi follows the continuing adventures of Kamen Rider Double Shotaro and Phillip as they bring justice and peace to their city.
The anime is being done by Studio Kai, a new studio which was founded in 2019. Their most known works include Cagaster of an Insect Cage and Super Cub.
— 仮面ライダー公式 (@HKR20_official) August 3, 2021
A summary of the series from the Kamen Rider Wiki can be found below.
In the ecologically-minded city of Futo (風都 Fūto, the “Windy City”), where nearly everything is powered by windmills, the people live in harmony. However, the Sonozaki Family sell mysterious devices resembling USB flash drives called Gaia Memories to criminals and other interested parties who use them to become monsters called Dopants, committing crimes with the police force powerless to stop them.
To make matters worse, the Gaia Memories carry a dangerous toxin that cause their users to go insane to the point where they could die from the life-threatening devices. After the death of his boss, the self-proclaimed hard-boiled (actually half-boiled) detective Shotaro Hidari works with the mysterious Philip, who possesses the true Gaia Memory, to investigate crimes which involve Dopants.
Using their own Gaia Memories, Shotaro and Philip use the Double Driver belts to transform and combine into Kamen Rider Double to fight the Dopant menace and keep Futo safe. While joined in their fight by investigator Ryu Terui, who transforms into Kamen Rider Accel, the mystery of Philip’s past, his relation to the Sonozaki Family, and their Museum organization are revealed.