Run, X-Rider! Hiroshi Tsukuba! Don't Die!! (走れＸライダー！筑波洋よ死ぬな！！ Hashire Ekkusu Raidā! Tsukuba Hiroshi yo Shinu na!!) is the thirty-first episode of Kamen Rider (Skyrider). It is the first part of a two-part arc which includes a team-up between Hiroshi Tsukuba (Skyrider) and Keisuke Jin (Kamen Rider X), featuring the return of Ryo Hayami as the latter.