Princess Aiko, the only child of Emperor Naruhito and Empress Masako, turned 23 on Sunday, marking her first year as a working adult while growing into her role as a member of the Japanese imperial family.Having graduated from university in the spring, the princess has been participating more frequently in official duties and ceremonies and has expressed her gratitude for the warm support of the people, according to the Imperial Household Agency.Princess Aiko began working at the Japanese Red Cross Society in April, where she was assigned to a department focused on training volunteers. Her …READ FULL ARTICLE