After his death, Kyoichi OKAMOTO, his former Shosei (a student who is given room and board in exchange for performing domestic duties) and adopted son, established a publishing company named 'Seiabo' for the purpose of preserving Kido's works.
死後、元書生で養子の岡本経一が綺堂の作品の保存を目的として出版社「青蛙房」を創立した。