Task 9: The Paper Crane Ninja (Task. 9 折鶴の忍者 Tasuku Nain: Orizuru no Ninja) is the ninth episode of GoGo Sentai Boukenger. This introduces elements regarding the connection between Masumi Inou (Bouken Black) and Yaiba of Darkness as well as a potential connection regarding the truth of Natsuki Mamiya (Bouken Yellow)'s past; it also introduces GoGo Crane, the fourth auxiliary vehicle.