Especially before and after the political change on August 18, the samurai of the Choshu Domain, people loyal to the Emperor who remained in Kyoto such as Chuzaburo TERAJIMA and Genzui KUSAKA, had contacted various Taifu of Arisugawanomiya or aides many times, such as Yoshikaze AWAZU and Shigeyuki MAEKAWA through the former Bishamon do aides, Shutaro FURUTAKA (KOTAKA), who pretended to be a business man and named 'Kiemon MASUYA,' they had contact by organizing to have a place for secret meeting, or they both exchanged secret messengers in hiding to each others, Prince Taruhito ordered Awazu and Maekawa to send a letter of consolation to the Chief retainer of a feudal lord of Choshu Domain, Kanenobu MASUDA.
特に八月十八日の政変の前後からは、商人を装い「枡屋喜右衛門」を名乗っていた元毘沙門堂家臣・古高俊太郎を仲介者として、寺島忠三郎や久坂玄瑞ら京に残った勤王派の長州藩士達が、粟津義風・前川茂行といった有栖川宮の諸大夫や家臣達と複数回にわたり接触し、両者の間で密会の場を設けたり密使を潜伏させあうなどの交際を行っているほか、熾仁親王は粟津や前川に命じ、長州藩家老の益田兼施宛に慰問の書状を出させたりしている。