Japanese legislative leaders have agreed on a plan to maintain the imperial family's numbers by allowing the adoption of male descendants from former imperial branches [1].

This decision addresses a critical shortage of eligible heirs to the throne. By expanding the pool of imperial members, the government aims to ensure a stable line of succession for future generations [2, 5].

The agreement, described as the "general will of the legislature," was reached during a general meeting held June 10, 2026, at the official residence of the Speaker of the House of Representatives in Chiyoda, Tokyo [3, 4]. Speaker Eisuke Mori and other leaders from both houses of parliament and various political parties participated in the deliberations [1, 2].

Under the proposed revision of the Imperial Household Law, male descendants of 11 former imperial branches that left the royal family in 1947 could be welcomed back as adoptees [3]. To be eligible for adoption, these individuals must be at least 15 years old [1].

Prime Minister Sanae Takaichi said that both proposed plans were acceptable [6]. Speaker Mori said there were no objections to the general consensus [7]. However, some reports indicate that the agreement may not have been unanimous across all political parties, with support limited to seven parties [8].

There remains a contradiction regarding the status of female imperial members. Some reports suggest that a proposal to allow female royals to retain their status after marriage was postponed [3], while other sources state that both plans presented by the government's expert panel were approved [2].

Ken Isozaki, the steering committee chair of the House of Councillors, said the legislation is expected to be submitted in late June [6].

Male descendants of 11 former imperial branches that left the royal family in 1947 could be welcomed back as adoptees.

The move to integrate descendants of the 11 former imperial branches represents a strategic compromise to preserve the traditional patrilineal succession system. By expanding the eligible male population, the Japanese government avoids the more controversial step of allowing female succession or female emperors, which remains a point of significant political and cultural debate within the country.