As Japan's emperor is formally enthroned, public gets a glimpse of his strict life

In his memoir, "The Thames and I," Prince Naruhito, as he was when he wrote it, recalls his brushes with greasy kippers and dingy pubs as a student at Oxford University in the 1980s.

He recounts how doormen at a disco turned him away because he was wearing jeans — not the sort of reversal a Japanese royal often experiences.

The two years that he spent at Merton College researching transport on the Thames river in the 18th century were perhaps "the happiest time of my life," he wrote.

Prince Naruhito became the 126th emperor of Japan in May when his father, Akihito, abdicated because of age and infirmity. He will be officially enthroned Tuesday, in a ceremony which the many grand guests, including the vice president of China and the prime minister of South Korea, will watch only by video monitor from another part of the palace.

At the conclusion, they will shout "Banzai!" (Literally "10,000 years!"; i.e., "Long live the emperor!")

The video link marks an improvement from April, when Emperor Akihito announced his abdication to the sun goddess, from whom he is supposed to be descended, in a ritual observed only by his son, Shinto priests and chamberlains.

The life of Japan's monarchs is absurdly formal and arcane. Emperor Naruhito's cheery reflections on life in Britain nearly did not see the light of day.

Its mandarins go to extraordinary lengths to protect the imperial family's image.

When Emperor Naruhito's brother, Fumihito, was married, in 1990, a photographer was banned from the palace for taking a picture of his bride brushing hair out of his eyes, rather than in a formal pose. The family, said Shihoko Goto — the senior Northeast Asia associate at the Wilson Center, a U.S. think tank — is so tightly bound by rules that it makes "the House of Windsor seem positively lax."

The Japanese press, by and large, is respectful of the boundaries set by the Imperial Household Agency. It was foreign publications, for instance, that broke the news first of Naruhito's engagement in 1993 and then of his wife's depression in 2004, even though many Japanese journalists were aware of both. Unlike in most European monarchies, there is no prurient tabloid coverage of the royals' love lives — although there is frequent criticism of royal wives and daughters whenever they are perceived to be shirking their duties.

The royal family's relatively limited personal wealth, meanwhile, means that there is little scope for playboy princes or tearaway princesses. The emperor's main interest is the management of water. Most of the royal family's assets were confiscated after the second world war.

The palaces and estates that it uses are owned by the state, which also pays for their upkeep and for the maintenance of the royal household. One expert estimates that Akihito, now styled "emperor emeritus," had only about ¥5 million ($46,000) a year to spend on personal purchases and activities. His father, Emperor Hirohito, left an estate of less than ¥2 billion when he died in 1989.

Although the emperor and empress, much like monarchs from other countries, undertake goodwill trips abroad and encouraging visits to schools and charities at home, traditionalists see the emperor's main job as performing obscure Shinto rituals.

Next month he will offer rice from two regions of Japan (chosen based on priests' interpretation of the cracks in a burnt tortoise shell) to the gods to thank them for the harvest, flanked by torch-bearing priests. He also has to grow his own rice, with a little help, presumably, from the imperial gardeners.

Empress Masako's tasks include tending to the silkworms of the Imperial Cocoonery, feeding them mulberry leaves and weaving structures from rice straw on which they spin their cocoons. Both emperor and empress compose classical poems to be declaimed to the court several times a year.

Whether Emperor Naruhito wants or would be able to modernize his role is uncertain.

He battled on his wife's behalf after she was upbraided for tiny infractions of sexist palace protocol, from speaking marginally longer than he did at their first joint news conference, to walking — gasp — a step ahead of her husband in public.

Emperor Akihito discreetly pushed back both against the dated rituals of royal life and against the tub-thumping nationalists who revere them. He gave the first televised address by a Japanese emperor after the tsunami and nuclear accident of 2011. Shortly afterward he visited some of those made homeless by the disaster, sharing a cup of tea with them while sitting on the floor.

He also appeared to question, albeit obliquely, the plan of Prime Minister Shinzo Abe to amend the clause of the constitution that commits Japan to pacifism.

In 2001 he brought up a distant Korean ancestor at a news conference — a snub to those who cling to ideas of racial purity, noted Ken Ruoff of Portland State University. More recently, he persuaded the obviously reluctant government to pass a law to allow him to abdicate.

The emperor is constitutionally "the symbol of the state and of the unity of the people." But the imperial cocoon in which he is kept risks making him more of a relic.

Much like his father, Emperor Naruhito is relatively informal when touring the country, petting dogs and chatting with schoolchildren. But younger Japanese seem to have little interest in the royal family — and the royal family has scant leeway to make itself more relevant.