Taken under the wing of book collector Tokuro NAKAGAWA and visiting him frequently, MIMURA began to associate with Kyoko YAMANAKA, Wakaki HAYASHI, Roan UCHIDA, Shigetomo KODA, and Shachiku ONO.
蔵書家の中川得楼の知遇を得て出入りを繰り返すうちに、山中共古、林若樹、内田魯庵、幸田成友、大野洒竹などとの交流が始まる。