A handout photo taken on November 23, 2016 and released by the Imperial Household Agency of Japan shows Princess Aiko (L) talking with her father Crown Prince Naruhito about her school trip at Togu Palace in Tokyo. Princess Aiko celebrated her 15th birthday on December 1. / AFP PHOTO / The Imperial Household Agency of Japan / STRINGER / ---EDITORS NOTE--- RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / IMPERIAL HOUSEHOLD AGENCY" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS