Japan Revises Imperial Succession Law but Keeps the Throne Male-Only

Japan's parliament approved a revision to its Imperial House Law on Friday intended to address a shrinking royal family, while keeping the centuries-old rule that only men may sit on the throne.

The South China Morning Post reported that the change, the first substantive revision to the 1947 law, allows male descendants of former imperial branches to inherit through adoption, and provides that female royals who marry commoners become ordinary citizens. Lawmakers again declined to permit female emperors despite public opinion favoring the idea. The Russian outlet Kommersant reported the same outcome, noting parliament retained the ban on women ascending the Chrysanthemum Throne against wide public backing for equality.

The measure is a narrow fix to a demographic problem. The imperial line has few eligible male heirs, and the revision widens the pool without reopening the more contentious question of female succession.

The story is a small illustration of a larger pressure facing Japan and much of the developed world. A society with an aging population and low birth rate confronts the same demographic pressure in its institutions that it faces in its labor force and pension system. Even a monarchy, insulated from markets, must legislate around a shrinking base of people, the same constraint that shapes Japan's long-run growth and fiscal outlook.