According to the Imperial Family Law (Showa 22, Law No. 3), Clause 11, one Imperial Prince, ten Emperors, and three Princesses were demoted from nobility to subject, based upon Clause 13 of Imperial Family Law, five Empresses of Emperors and lineal descendants (16 Emperors and nine Empresses) and their two Empresses did the same, based upon Clause 14, No. 1 of Imperial Family Law, five mistresses of former Emperors left the Imperial Family.
内親王1名、王10名及び女王3名については皇室典範（昭和22年法律第3号）第11条により、離脱する王の妃5名並びに直系卑属（王16名及び女王9名）及びその妃2名は皇室典範第13条により、寡妃5名は皇室典範第14条第1項により、それぞれ離脱した。