1989 marked the opening of the exhibition "Michael and Edgar Ende" in Tokyo. The exhibition was subsequently shown in Otsu, Miyazaki, Nagasaki, Osaka, Nagoya and Fukuyama. At the invitation of "Shimbun", a Japanese newspaper, Michael Ende attended the opening and spent two months touring Japan. It was his third trip accompanied by the Japanese-born Mariko Sato, whom he married in September 1989. The following year an archive devoted to Michael Ende was established at Kurohime Dowakan, a museum in the Japanese city of Shinano-machi. Ende donated letters and other personal items to the collection. On 23 October 1992 Michael Ende made his final trip to Japan. In the course of their three-week visit Michael Ende and Mariko Sato-Ende visited the Dowakan museum, joined Ende's Japanese publishers, Iwanami, in celebrating the millionth sale of Momo, and travelled to Kanazawa and Hamamatsu and a number of other cities that were new to Ende.