PARIS, FRANCE - SEPTEMBER 11: Japan's Crown Prince Naruhito arrives at the National Assembly on September 11, 2018 in Paris, France. Crown Prince Naruhito, who will become Emperor on May 1, 2019, is visiting France from September 7 to 15, as part of the 160th anniversary of the signing of the first diplomatic and trade treaty between France and Japan. (Photo by Chesnot/Getty Images)