Help! Two Riders!! Mother Becomes a Demon (助けて！２人のライダー！！母ちゃんが鬼になる Tasukete! Futari no Raidā!! Kāchan ga Oni ni Naru) is the thirty-ninth episode of Kamen Rider (Skyrider). It is the first part of a two-part arc which includes a second team-up between Hiroshi Tsukuba (Skyrider) and Hayato Ichimonji (Kamen Rider #2), featuring the return of Takeshi Sasaki as the latter.