Sonno-Joi forces gradually waned in the Tosa clan as the Tosakino Party, a loyalist clique of Tosa led by Zuisan TAKECHI, was suppressed (Toyo YOSHIDA, an administrator of the clan, was assassinated the year before).
また土佐藩では武市瑞山が率いる土佐勤王党（前年に藩執政吉田東洋を暗殺）が弾圧され尊攘勢力は次第に後退していった。