noun
regency; regent
Refers to the office or person acting as ruler when the monarch is a minor, incapacitated, or absent. In Japanese history, the 摂政 (Sesshō) was a powerful regent position, often held by members of the Fujiwara clan.
平安時代には、藤原氏が摂政の地位を独占した。
During the Heian period, the Fujiwara clan monopolized the position of regent.
天皇が幼いため、摂政が政務を代行
Because the emperor is young, the regent conducts state affairs on his behalf.