Thousands of flag-waving people cheered Japan's new Emperor Naruhito on Sunday (Nov 10) during a rare open-top vehicle imperial parade that was rescheduled after a deadly typhoon.
Police have set up 40 security checkpoints. The use of drones, selfie sticks and tripods is also strictly prohibited.
Emperor Naruhito ascended the throne after his father, Akihito, abdicated, marking the first time in two centuries that an emperor had stepped down during their reign.
The royal couple rode in a Toyota Century convertible as it traveled to the Akasaka Imperial Residence.
The parade of almost five kilometres (three miles) through central Tokyo was originally scheduled for October 22, but the government postponed it after more than 80 people were killed by Typhoon Hagibis last month.
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Sunday's parade started from the Imperial Palace, with the Kimigayo national anthem played by a marching band.
Educated at Harvard, Masako left behind a promising diplomatic career to marry into the royal family.
The royal couple is popular, and so many people gathered to line the route that some were unable to make it through checkpoints.
Japan's Emperor Naruhito, center, leaves at the end of the enthronement ceremony where he officially proclaimed his ascension to the Chrysanthemum Throne at the Imperial Palace in Tokyo, Oct. 22, 2019.
"The sky is so blue and this is a great day for taking photos, as if it's the heaven's blessing for (the emperor)", said Suzuki, an amateur photographer.
"I am so happy to see him", she said.More news: Thousands gather to honour the fallen — Remembrance Sunday
"Emotion welled up and I was so happy that I was about to cry", she said.
Conservatives insist on the male-only succession, but Suzuki says he doesn't mind having a female monarch. In the previous such ceremony, Rolls-Royce Corniche III was used.
Sunday's event was the first since one was held for Naruhito and Masako's marriage in June 1993, just three years after his parents marked their enthronement with a parade.
Many Japanese were especially impressed by the couple freely conversing with U.S. President Donald Trump and his wife, Melania, during their visit weeks after Naruhito's succession in May, according to palace watchers.
There are expectations that Naruhito - who is Japan's first emperor with a college degree and who studied overseas - and his Harvard-educated wife will internationalize the imperial household. Masako, a former diplomat, has struggled for more than a decade and had largely withdrawn from public appearances until recently.
"I'm looking forward to see the dress Empress Masako will wear", Ms Hiroko Kikuta, in her 60s, told AFP.More news: Some in GOP Warn Against Election Challenge in Kentucky