Kamen Rider OOO: The Birth of Birth X Prologue
As the ancient king OOO continues his onslaught on humanity, Kougami gathers his former employees to create a resistance... and introduce a new weapon in the fight!
- Year: 2022
- Country: Japan
- Genre: Action, Science Fiction, Fantasy
- Studio: Toei Tokusatsu Fan Club
- Keyword: monster, superhero, prologue, superhero team, time skip, short film, webisode, kamen rider
- Director: Ryuta Tasaki
- Cast: Hiroaki Iwanaga, Asaya Kimijima, Mayuko Arisue, Takashi Ukaji