Narrative and Characterization Narratively, Yaiba functions more as a pastiche than a serious installment. Its script is built around gags, set-piece reveals, and cameo interactions with established Ninja Gaiden figures. Yaiba himself is deliberately abrasive and shallow by design—an antihero who exists to be both protagonist and punchline. While this makes for occasional laughs, it also leaves little room for meaningful character development or thematic depth.