Amendments to Japan’s Imperial Household Law that passed in July took effect on Saturday. One allows Japanese princesses to keep their royal status even if they marry non-royals, though their future children are not considered royals. The other amendment is an apparent roundabout way to preserve patrilineal succession: members of the royal family may adopt a male from former imperial branch families, and those adoptees’ future male offspring can be considered legitimate successors to the throne.
The revisions aim to expand the future pool of eligible heirs to the throne while reinforcing the shutting out of women from leading the Japanese monarchy, which staunch conservatives including the country’s first female Prime Minister, Sanae Takaichi, have repeatedly advocated against upending.
The small pool had raised concerns about the future of the Japanese imperial family. The Japanese public has shown support for female monarchs, signaling a preference to keep the renowned family on the throne. Fans of Princess Aiko, the emperor’s sole daughter, have marched in Japan’s streets in recent weeks in support of her eligibility to become empress.
But extreme right-wing factions in Takaichi’s Liberal Democratic Party have insisted that maintaining only males from the male imperial line as eligible to become emperor preserves the authority of the Chrysanthemum Throne. The revisions were ultimately borne out of the coalition agreement signed in October last year by the LDP and its junior partner, the Japan Innovation Party.
While the Imperial Household Agency has said it will study how to implement the measures, critics are already studying how to turn the policy over, arguing that it violates the country’s anti-discrimination law. Manga artist Yoshinori Kobayashi filed a lawsuit against the government that called the amendment “unconstitutional.”
“It could dilute the feeling of closeness or the feeling of holiness that some people might feel towards the royal family,” Jeffrey J. Hall, a lecturer at Kanda University of International Studies, tells TIME, “because they're more used to the royals that they already know.”
The amendments allow members of the imperial family to adopt a male who is 15 years of age or older and is also a legitimate descendant of a male member of the imperial family before it was trimmed down after World War II. That adoptee should not be married or have children.
Several branches of the Japanese imperial family renounced their royal status in 1947 to cut down on costs the monarchy incurred after the war. Government officials previously said that these 11 families split from a common male-line ancestor some 600 years ago, and are now at least 36 degrees of kinship from Naruhito.
However, the adopted males would not be eligible for the throne—only their eligible male offspring would be. The law would be reviewed every 30 years.
Jeff Kingston, a professor of Asian history at Temple University’s Japan campus in Tokyo, tells TIME the government’s offered solution to the dwindling pool raises questions about the legitimacy of the potential heirs. “Would these people be taken as legitimate by the public?” he says remains an open question, especially as reports surface about who those potential additional successors to the throne might be. “The problem of a monarchy is it’s sort of based on—I don't know—a collectively held myth, belief, faith; and a sausage maker probably isn't going to have that magic.”
Hall, from the Kanda University of International Studies, echoes that the Japanese government will find it difficult to convince the public, especially since the move would introduce unfamiliar faces. “It will be a very difficult problem for the Japanese government to try to basically build up an ideology or a PR program that convinces people that the new royal adoptees are just as royal as the other ones that we all know.”
Kingston says that conservatives proposed the amendments to ensure that a female-led monarchy wouldn’t happen in Japan, even when many Japanese people appear fine with it and some even seem to prefer it. Past media surveys have shown that more than 80% of Japanese respondents favored a female emperor.
Protesters took to central Tokyo’s streets on Oct. 10 to call for further debates on the Imperial Household Law, claiming that Princess Aiko, who is 24, should be eligible for the throne.
