Kamen Rider Build (仮面ライダービルド, Kamen Raidā Birudo) is a Japanese tokusatsu drama and the 28th entry of Toei Company's Kamen Rider metaseries. It is the nineteenth series to debut during the Heisei era. The show premiered on September 3, 2017, following the finale of Kamen Rider Ex-Aid, joining Uchu Sentai Kyuranger and later, Kaitou Sentai Lupinranger VS Keisatsu Sentai Patranger in the Super Hero Time line-up. It is the first series with a science motif.