In 833, Junna abdicated the throne to the Crown Prince Masara (Emperor Ninmyo) and here the declination of retired emperor by Junna and empress dowager by Empress Masako and the refusal by the new Emperor Ninmyo was repeated, and the Crown Prince was decided to be the prince born between Junna and Masako, Imperial Prince Tsunesada (Koshi and Tsuneyo had already died young).
天長10年（833年）に淳和が皇太子正良（仁明天皇）に譲位すると、ここでも淳和の太上天皇辞退・皇后正子の皇太后辞退と新天皇仁明による拒絶が繰り返され、皇太子には淳和と正子との間に生まれた皇子恒貞親王が立てられた（高志・恒世はともにすでに早世していた）。