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Spain's King Felipe (L) and Queen Letizia (2nd L) sit with and Japan's Emperor Akihito (R) and Empress Michiko inside a Shinkansen bullet train as they leave on their one-day trip to Shizuoka, at Tokyo station in Tokyo on April 7, 2017. The Spanish royal couple is on a four-day state visit to Japan. / AFP PHOTO / POOL / ISSEI KATO (Photo credit should read ISSEI KATO/AFP/Getty Images)

Spain's King Felipe (L) and Queen Letizia (2nd L) sit with and Japan's Emperor Akihito (R) and Empress Michiko inside a Shinkansen bullet train as they leave on their one-day trip to Shizuoka, at Tokyo station in Tokyo on April 7, 2017.
The Spanish royal couple is on a four-day state visit to Japan. / AFP PHOTO / POOL / ISSEI KATO        (Photo credit should read ISSEI KATO/AFP/Getty Images)

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Spain's King Felipe (L) and Queen Letizia wave to well-wishers from a window of a Shinkansen bullet train as they leave on their one-day trip to Shizuoka with Japan's Emperor Akihito and Empress Michiko, at Tokyo station in Tokyo on April 7, 2017. The Spanish royal couple is on a four-day state visit to Japan. / AFP PHOTO / POOL / ISSEI KATO (Photo credit should read ISSEI KATO/AFP/Getty Images)

Spain's King Felipe (L) and Queen Letizia wave to well-wishers from a window of a Shinkansen bullet train as they leave on their one-day trip to Shizuoka with Japan's Emperor Akihito and Empress Michiko, at Tokyo station in Tokyo on April 7, 2017.
The Spanish royal couple is on a four-day state visit to Japan. / AFP PHOTO / POOL / ISSEI KATO        (Photo credit should read ISSEI KATO/AFP/Getty Images)