Members of the Imperial family who have reached the age of majority mutually stand for election for the Imperial Household Council as councilors or backup councilors, and can assume the role of councilor or backup councilor if they win (Article 28, 30, and 32 of the Imperial House Act).
成年皇族は皇室会議の議員・予備議員（各2人・任期4年）の互選人となり、当選すれば議員・予備議員に就任することができる（皇室典範28,30,32条）。