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!
Watch Kamen Rider OOO: The Birth of Birth X Prologue Online
Kamen Rider OOO: The Birth of Birth X Prologue is not available for streaming at this moment.
Kamen Rider OOO: The Birth of Birth X Prologue Photos
