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Japanese Crown Prince Naruhito (L) chats with Crown Princess Masako (R) prior to his departure for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017. The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. / AFP PHOTO / Toshifumi KITAMURA (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

Japanese Crown Prince Naruhito (L) chats with Crown Princess Masako (R) prior to his departure for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017.
The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. / AFP PHOTO / Toshifumi KITAMURA        (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

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Japanese Crown Prince Naruhito (L) chats with Crown Princess Masako (R) prior to his departure for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017. - The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. (Photo by Toshifumi KITAMURA / AFP) (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

Japanese Crown Prince Naruhito (L) chats with Crown Princess Masako (R) prior to his departure for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017. - The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. (Photo by Toshifumi KITAMURA / AFP)        (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

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Japanese Crown Prince Naruhito (L) chats with Crown Princess Masako (R) prior to his departure for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017. The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. / AFP PHOTO / Toshifumi KITAMURA (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

Japanese Crown Prince Naruhito (L) chats with Crown Princess Masako (R) prior to his departure for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017.
The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. / AFP PHOTO / Toshifumi KITAMURA        (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

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Japanese Crown Prince Naruhito (L) chats with Crown Princess Masako (R) prior to his departure for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017. The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. / AFP PHOTO / Toshifumi KITAMURA (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

Japanese Crown Prince Naruhito (L) chats with Crown Princess Masako (R) prior to his departure for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017.
The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. / AFP PHOTO / Toshifumi KITAMURA        (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

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Japanese Crown Princess Masako waves as Crown Prince Naruhito departs for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017. The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. / AFP PHOTO / Toshifumi KITAMURA (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)

Japanese Crown Princess Masako waves as Crown Prince Naruhito departs for Malaysia at the entrance of the Togu Palace in Tokyo on April 13, 2017.
The Crown Prince departs for Kuala Lumpur on April 13 for a five-day visit. / AFP PHOTO / Toshifumi KITAMURA        (Photo credit should read TOSHIFUMI KITAMURA/AFP/Getty Images)