 In December 1963, Kubota had her first solo show, "1st Love, 2nd Love..." at Naiqua Gallery in Tokyo, an alternative/ avant-garde space in Shinbashi, Tokyo.Later that year, she moved to New York after exchanging letters with George Maciunas about the New York Fluxus scene.Her first show in New York was on July 4, 1965 at Cinemateque as part of the perpetual Fluxfest, where she performed her famous "Vagina Painting."