The daimyo (Japanese territorial lord) of Choshu, Tadachika MORI, and his son Sadahiro MORI were ordered into house arrest in their hometown and lost their authority to lead politically, but in the capital and in Osaka, several Imperial loyalists from Choshu continued to work secretly to restore the Emperor to power.
藩主の毛利敬親と子の毛利定広は国許へ謹慎を命じられて政治主導権を失っており、京や大坂に密かに潜伏した数名の長州尊攘派はにわかに行動を続けていた。