Kamen Rider Agito: Project G4

After years of being sheltered from the human world, the Turtle brothers set out to win the hearts of New Yorkers and be accepted as normal teenagers through heroic acts. Their new friend April O'Neil helps them take on a mysterious crime syndicate, but they soon get in over their heads when an army of mutants is unleashed upon them.

Taking place after the end of the series, Doubutsu Sentai Zyuohger Returns will focus on Zyumans and humans peacefully co-exist on Earth. It is then decided that they'll have a battle to determine who will rule the Earth, but a real danger lurks in the shadows.

In order to counter the rapidly increasing organized crime, the development of Polymar Suits resumed under the direction of the newly inaugurated police superintendent. But when three of the test version Polymar Suits are stolen, former street fighter and current detective Takeshi Yoroi is tasked with recovering them and the invincible hero Hurricane Polymar is born!

A live show that was performed across Japan in April and May of 2021, acting as a final farewell for the cast. It comprises two parts: a scripted show part, and a talk show with the cast. The Zenkaigers also appear.

Jiban goes into action to save Yoko and several captured children from Doctor Giba's plot of creating the ultimate lifeform.