Sosai was abolished among the three posts while Prince ARISUGAWA Taruhito was staying in Edo, and two Fukusosai held the position of the virtual head of the government called Hosho.
三職のうち総裁が廃止されて（当時、有栖川宮熾仁親王は、江戸に滞在中）、副総裁2人が輔相と称して事実上の政府首班に就いた。