Japan’s Parliament has revised the Imperial House Law to adjust imperial succession rules while maintaining the requirement that only men can become emperor. The revised law allows the adoption of male distant relatives aged over 15 back into the imperial family, a change intended to secure the continuation of the imperial line. The decision comes as Japan’s imperial household faces questions about succession, with the current heir being Princess Aiko, who would be next in line if sex were not a factor.
The revision represents a partial relaxation of succession rules but stops short of permitting female succession to the throne. According to sources covering the story, there is public support for allowing women to become emperor, though Parliament chose to maintain the male-only restriction. The adjustment to allow adoption of distant male relatives is viewed as a measure to ensure the imperial line’s endurance without opening the succession to women.
Japan’s imperial line is among the world’s oldest, with a documented history spanning approximately 1,500 years. The revision of these succession laws reflects ongoing debates within Japan about how to preserve the imperial institution while addressing practical challenges posed by the current composition of the imperial family.
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