Britain's Prince William (R) is greeted by Japanese Crown Prince Naruhito upon his arrival at the Akasaka Palace in Tokyo on February 27, 2015. Prince William arrived in Tokyo on February 26 for a four-day visit to Japan. AFP PHOTO / POOL / KAZUHIRO NOGI (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images)

Britain's Prince William (R) is greeted by Japanese Crown Prince Naruhito upon his arrival at the Akasaka Palace in Tokyo on February 27, 2015. Prince William arrived in Tokyo on February 26 for a four-day visit to Japan.  AFP PHOTO / POOL / KAZUHIRO NOGI        (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images)