Being critical of the oligarchic government dominated by hanbatsu (domain cliques), HOSHI participated in the political campaign called Sandaijikenpaku Undo (a movement triggered by the petition calling for establishment of three pillars) in 1887, but he was driven out of Tokyo according to hoan jorei (regulations for the preservation of law and order) and then was arrested for violation of publication regulations.
藩閥政治を批判し、明治20年（1887年）の三大事件建白運動に参加し、保安条例で東京を追われ、出版条例違反で投獄される。