Monzaemon continued to release masterpieces one after another in collaboration with Gidayu, and for the first time his name, Monzaemon CHIKAMATSU, was credited as the author of "Sasaki Okagami," staged in 1686 in the Takemoto-za theater.
その後も義太夫と組んで名作を次々に発表し、貞享3年(1686)、竹本座上演の『佐々木大鑑』で初めて作者名として近松門左衛門と記載した。