The event itself was small, but in Mino Province there were many manors which were in possession of Enryaku-ji Temple, and Goshirakawa had been working to control those manors through the kokushi (local governor) who were his attendants, so Enryaku-ji Temple sought to have Narichika exiled and Masatomo detained.
事件自体は小さなものだったが美濃国は延暦寺の荘園が多く、後白河は国司に院近臣を任じて荘園抑止の政策をとっていた経緯もあり、延暦寺は成親の配流と政友の禁獄を求めて強訴を起こした。