Although this was followed by the offensive carried out by the Shogunate on the Choshu clan, which was deemed the enemy of the Imperial Court, once Emperor Komei died, the Choshu clan was forgiven, and a Saccho alliance was secretly formed between the Choshu clan and the Satsuma clan, which switched its position to bring the end of the Shogunate rule.
その後幕府により朝敵とされた長州藩の征伐（長州征伐）が行われるが、孝明天皇が死去すると長州は許され、藩論を倒幕に転換した薩摩藩と秘密裏に薩長同盟が結ばれる。