Sesshō is a historical term from Japan, referring to a regent who governed on behalf of a minor emperor or a ruler unable to fulfill their duties. This position was significant during the Heian period, where political power often shifted between the imperial family and powerful noble clans. The sesshō was responsible for making important decisions and managing the affairs of the state. The role of the sesshō was typically held by a member of the Fujiwara clan, who would act as a guardian and advisor. Over time, the position evolved, leading to the creation of the shōgun, which further changed the political landscape of Japan.