Japan enacts revised law that strengthens male-only succession to lead shrinking imperial family
Japan's Parliament has passed a law maintaining the male-only succession rule for the imperial throne, despite public support for Princess Aiko to succeed her father. The legislation includes provisions for adopting distant male relatives to ensure the continuation of the imperial line as the family shrinks.
Why it matters
This decision highlights the tension between traditional monarchical customs and modern societal expectations regarding gender equality in Japan.
Japan's Parliament enacted on Friday (July 17, 2026) a historic revision to the 19th century Imperial House Law by insisting only paternal-lineage men can become emperor, sparking fear that it could doom the already shrinking imperial family.
The revisions include adoption of distant male relatives to father future heirs and allowing princesses to keep their royal status after marrying commoners.
Emperor Naruhito's 24-year-old daughter is hugely popular, and many Japanese want her to be his successor. Princess Aiko is ineligible because she is a woman.
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