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Japan Revises Imperial Succession Law, Male-Only Rule Stays

The changes let the royal family adopt distant male relatives and allow princesses to keep their status, but women remain barred from the throne.

  • On Friday, Japan's parliament enacted a historic revision to the Imperial House Law, maintaining the male-only succession principle while allowing adoption of distant royal male relatives to father future heirs.
  • To secure the patriarchal line, the legislation addresses the shrinking imperial family, which has only five male adults among 16 total, following Prince Hisahito, the 19-year-old nephew of Emperor Naruhito.
  • Nagoya University expert Hideya Kawanishi and critics argue the law prioritizes male lineage over female succession, despite public popularity for 24-year-old Princess Aiko, the Emperor's daughter, as a potential heir.
  • New measures allow princesses to retain royal status after marrying commoners, though their spouses and children remain excluded from the line of succession, maintaining the strict paternal-lineage requirement for emperors.
  • Former royal Asahiro Kuni warned that recruiting distant relatives creates "cruel" life constraints, while scholars fear the focus on male offspring places excessive pressure on future royals to produce heirs.
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The new law allows for the incorporation of male descendants from former family branches and for women to retain their status after marriage

·Madrid, Spain
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The law reinforces the male line and leaves intact the exclusion of women from the throne

·Madrid, Spain
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Inquirer broke the news in Makati, Philippines (the) on Thursday, July 2, 2026.
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