Later it merged with Oizumi Films, which had achieved success in the film production industry, and Toyoko Film Company (founded in 1938) which had run movie theaters in Shibuya, Tokyo and Yokohama City in order to develop the areas along the Tokyu Toyoko line, but after World War Two it rented the former Shinko Cinema Kyoto Studio from Daiei Motion Picture Company to start film production and changed its name to Toei.
やがて映画製作に進出した太泉映画（おおいずみえいが）と1938年設立の東横映画（とうよこえいが）（東急東横線の沿線開発を目的に、東京の渋谷や横浜市で映画館を経営していたが、戦後大映(映画)より京都第2撮影所（旧新興キネマ京都撮影所）を賃借して映画製作に進出。）を吸収合併、社名を東映と改めて出発した。