Japan has taken its first real step in decades to shore up an imperial family that is quietly running out of heirs, but it has done so while leaving intact the very rule that created the shortage.
What changed
Parliament approved the first substantive revision to the 1947 Imperial House Law, making two changes aimed at slowing the family's decline. It will allow female members of the imperial family to keep their royal status even after they marry a commoner, reversing a rule that until now stripped princesses of their titles and pushed them out of the family on marriage. And it will permit the adoption of men aged 15 and older from former imperial branches, families descended through the male line from past emperors, who lost their royal standing after World War II, as a way to enlarge the pool of eligible heirs.
What did not change
The central rule stands: only men, descended through the male line, may sit on the Chrysanthemum Throne. That is the constraint driving the crisis. The imperial family now has just three male heirs, Emperor Naruhito, his brother Crown Prince Fumihito, and Fumihito's teenage son, Prince Hisahito. Behind them the line all but runs out. Naruhito's own child, Princess Aiko, cannot inherit under current law despite being the emperor's daughter, and unless Prince Hisahito eventually has sons of his own, the male line faces a genuine dead end.
A gap between the public and the government
The change lands amid striking public support for going further. Government polling has shown large majorities of Japanese in favor of allowing a female emperor, and of allowing succession through the female line, with surveys putting support for a reigning empress well above 90 percent, according to reporting on the debate. The country is led by its first female prime minister, Sanae Takaichi, whose conservative coalition nonetheless favored preserving male-only succession, and opposition lawmakers criticized the process as rushed and the outcome as a way to entrench tradition rather than confront the underlying problem.
The history, and the stakes
Supporters of change note that Japan has had reigning empresses before, several in its early history, undermining the claim that male-only rule is an unbroken ancient principle rather than a later convention. Other monarchies, from Britain to the Netherlands, have moved to gender-neutral succession without incident. Japan's conservatives counter that opening the throne to the female line could, in their view, effectively start a new dynasty. For now, the revision buys the institution time by widening the field of potential male heirs. But it defers, rather than settles, the question the public has largely already answered, and a generation from now, absent a male heir, Japan may find itself back exactly where it started.
