Imperial Household Law
She visited a special exhibition on the 150th anniversary of Japan–Italy diplomatic relations on 5 April 2016 at the Tokyo museum. Since turning 16, she has accompanied her parents at public appearances. Princess Aiko was ineligible to attend any of her father's ascension ceremonies in person as she was still a minor at the time. According to Imperial Household Law, Article 22, she will reach the age of maturity on her twentieth birthday in 2021.