Project Arms Specials ( Air Date 2002-04-04 ) Genre Animation, Sci-Fi & Fantasy, Action & Adventure category. Overview "Ryo Takatsuki learns that his missing right arm is actually an ARMS nanomachine implant from secret genetic experiments, and alongside fellow test subjects Kei Karuma, Takeshi Tomoe, and Hayato Shingu, he battles the creators of the technology, the Egrigori, to rescue his kidnapped girlfriend Katsumi Akagi.".