On January 1, 2022, Emperor Naruhito, Empress Masako, Princess Aiko, Crown Prince Akishino, Crown Princess Kiko, Princess Kako and other members of Japanese Imperial family attended a New Year reception held for ambassadors to Japan at the Imperial Palace in Tokyo. Princess Aiko celebrated her 20th birthday in December last year and thus, she attended an official event for the first time as an adult member of the Imperial family.