Sonnō jōi
Hisamitsu followed a policy of "Kōbu gattai", or "unity between the shogunate and the imperial court". The marriage between Tokugawa Iemochi, the next "shōgun", and imperial princess Kazunomiya was a major success for this faction. However, this put Satsuma at odds with the more radical "Sonnō jōi", or "revere the Emperor and repel the barbarians" faction, with Chōshū as the major supporter.