Empress Emerita Michiko turns 85 on Sunday.
It's her first birthday since she became Empress Emerita following the abdication of Emperor Emeritus Akihito at the end of April.
The Imperial Household Agency says both the Emperor Emeritus and Empress Emerita are pleased to see Emperor Naruhito and Empress Masako fulfilling their duties.
The agency quoted the couple as hoping that the enthronement ceremony next week will end in a success.
The Emperor Emeritus and Empress Emerita are paying attention to the situation in disaster-hit regions.
They are reportedly concerned about extensive damage from simultaneous flooding of many rivers caused by Typhoon Hagibis, which they view as a new form of disaster.
The Empress Emerita has undergone cataract and breast cancer surgery since her husband abdicated.
The couple now lives in peace, walking together in the morning and dining together three times a day.
The agency says the couple is also preparing for the switch of residences with the Emperor's family by the end of March.
All ceremonial events for the Empress Emerita's birthday have been cancelled following the typhoon disaster last weekend.