President Rodrigo Duterte has arrived in Japan Tuesday morning (Manila time) to join other world leaders in witnessing the enthronement of Emperor Naruhito.

The President left his hometown Davao City 6:30 p.m. Monday with a "lean delegation" to attend the historic ceremony on Tuesday.

Executive Secretary Salvador Medialdea will serve as officer-in-charge while the President is in Japan.

Among those the President brought with him to his two-day trip to Japan were his daughter Davao City Mayor Sara Duterte, Presidential spokesman Salvador Panelo, Senator Christopher "Bong" Go, Philippine Ambassador to Japan Jose Laurel V, Special Envoy to Japan Feliciano "Sonny" Belmonte, and Chief of Presidential Protocol, and Presidential Assistant on Foreign Affairs Robert Borje.

Japan is the Philippines' top source of development assistance and second major trading partner next to China.

Among the guests that will attend Naruhito's enthronement are Britain's Prince Charles, who along with Princess Diana attended Akihito's enthronement ceremony, US Transportation Secretary Elaine Chao, Chinese Vice President Wang Qishan and South Korean Prime Minister Lee Nak-yon.

Also attending are Ukrainian President Volodymyr Zelenskiy, Brazilian President Jair Bolsonaro and Myanmar leader, Nobel laureate Aung San Suu Kyi.

Following the enthronement ceremonies on Tuesday, a court banquet will be held to be attended by foreign dignitaries and representatives of Japan's executive, legislative and judicial branches, and their spouses.

Emperor Naruhito and Empress Masako, his Harvard-educated, ex-diplomat wife, will host a tea party for foreign royalty the following afternoon.

Abe will then host a banquet for about 900 foreign leaders and other delegation members at Tokyo's Hotel New Otani in the evening.