However thousands of years ago, a traitor working for the Megid tried to steal it for himself. Long ago, a sect of swordsmen known as the Sword of Logos protected the Almighty Book, a powerful tome of history that contains everything known to man myths, creatures, stories, science, technology, and the evolution of human civilization.

Filming wrapped up on J and the finale premiered on August 29, 2021. On Jthe show's logo was fully unveiled during the press conference introducing the main cast of the show, as well as revealing Takuro Fukuda as the main scriptwriter. Toei Company confirmed and filed the trademark for Kamen Rider Saber on May 29, 2020.