 The success of the series, which ran for 51 episodes, generated enough interest from Toei Company executives to persuade them to produce a sequel, something unprecedented in the Kamen Rider Series franchise.After finishing his work on "Black", Kurata was approached by Toei and renewed his contract for one more year in exchange for a salary raise to work on "Black"s sequel, "Kamen Rider Black RX".This second series was less successful than its predecessor due to its witty and comical style, which differed deeply from the shadowy, darker tone of the original.