Japan's Crown Prince Signals Doubts Over Male-Only Succession Law

Crown Prince Akishino stood before reporters on Thursday with a carefully constructed answer to a question that has fractured Japanese society. Asked about his government's recent revision to the Imperial House Law—a change that locked male-only succession into place—he said he carried "mixed feelings" about it. The words were measured, almost diplomatic, but they represented something rare: a member of the imperial family openly signaling discomfort with an official policy.

The context matters. Just weeks earlier, Prime Minister Sanae Takaichi's conservative government had pushed through a revision intended to reinforce the principle of imperial bloodline succession through the paternal line. The move was meant to stabilize a monarchy facing demographic crisis—Japan's imperial family is shrinking, and the pool of eligible heirs is shallow. But the revision also had the effect of cementing something else: the exclusion of Princess Aiko, Emperor Naruhito's 24-year-old daughter, from ever becoming empress. She is popular with the Japanese public and widely seen as a capable successor. She cannot inherit the throne because she is a woman.

Akishino's language at the news conference, held ahead of a trip to Paraguay to commemorate the 90th anniversary of Japanese emigration there, was constrained by his position. Members of the imperial family are not expected to make political statements. Yet he found a way to express doubt. "I believe there is no difference between men and women" in carrying out the imperial family's roles, he said. When pressed on the government's decision itself, he acknowledged the bind: "I have mixed feelings about it, and it's rather strange if I don't." He also said the question was difficult and that he could not fully discuss it. But he added that society must continue to progress and that people with different views should keep thinking about what is best.

The revised law contains two major changes. The first allows princesses to retain their status and continue royal duties if they marry commoners, though their husbands and children will not be royal. The second, more controversial provision permits unmarried male descendants aged 15 or older from distant imperial branches to be adopted into the immediate royal family to father heirs—but only if they descend through the paternal line. This second change has drawn particular criticism as an attempt to engineer male heirs while keeping Princess Aiko off the throne.

Under current succession rules, the line runs from Emperor Naruhito to Crown Prince Akishino, then to Prince Hisahito, and after him to the emperor's 90-year-old uncle. The revised law essentially forecloses any path for the emperor's daughter to rule, despite her popularity and the fact that Japan has had eight female monarchs in its history. The last was Empress Gosakuramachi, who reigned from 1762 to 1770. Male-only succession through the paternal line was not always law in Japan; it was first written into the Imperial House Law in 1890, during a period when the nation was actively promoting patriarchal systems. Much of that framework carried forward into the current 1947 law.

The revision has triggered protests from those who see it as both anachronistic and discriminatory—an attempt to defend a patriarchal system at odds with modern Japan. There is also concern that the government's push could undermine the legacy of former Emperor Akihito, who abdicated in 2019 after working to bring what had been seen as a distant monarchy closer to the people. His son, Emperor Naruhito, and his family have continued that approach. Akishino's carefully worded remarks, then, arrive at a moment when the question of succession, the place of Princess Aiko, and the future shape of the imperial institution remain unsettled in Japan.