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Prince Hisahito becomes Japan’s first male royal to reach adulthood in 4 decades

Emperor Naruhito’s nephew is one of only four men in the imperial family – which poses a problem for a system that does not allow empresses

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Prince Hisahito has long been interested in insects and even co-authored an academic paper on a survey of dragonflies on the grounds of his Akasaka estate in Tokyo. Photo: Imperial Household Agency of Japan via AFP

In a big milestone for Japan’s royal family, Prince Hisahito turned 18 on Friday, becoming the first male royal family member to reach adulthood in almost four decades.

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It is a significant development for a family that has ruled for more than a millennium but faces the same existential problems as the rest of the nation – a fast-ageing, shrinking population.

Hisahito, who is set to become the emperor one day, is the nephew of Japanese Emperor Naruhito. His father, Crown Prince Akishino, was the last to do so, in 1985.

Hisahito is the youngest of the 17-member all-adult imperial family, which currently has only four men.

Japan’s Princess Aiko greets guests during the spring garden party at the Akasaka Palace imperial garden in Tokyo in April. Photo: AP
Japan’s Princess Aiko greets guests during the spring garden party at the Akasaka Palace imperial garden in Tokyo in April. Photo: AP

His status as the last heir apparent poses a major problem for a system that does not allow empresses. The government is debating how to keep succession stable without relying on women.

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The 1947 Imperial House Law, which largely preserves conservative pre-war family values, only allows a male to succeed to the throne and forces female royal members who marry commoners to lose their royal status.

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