Japan's legislative leaders have reached a consensus on two proposals to expand the imperial family and amend the Imperial House Law [1].

This agreement is critical because the shrinking number of royal family members threatens the stability of the succession line. Politicians said that maintaining the size of the family is essential for the nation's dignity and continuity [2].

The consensus was established during a meeting on June 10, 2026 [3], held at the House of Representatives Speaker’s official residence in Tokyo. The discussions involved Prime Minister Takashi and the leaders of six opposition parties, alongside the chairs and vice-chairs of both houses of the Diet [4]. In total, representatives from 13 party groups participated in the process [5].

The legislative body agreed upon two specific proposals [6]. The first would allow female members of the imperial family to retain their royal status after marriage. The second proposal involves admitting male descendants of former princely houses as adoptees to the family [7].

While 13 party groups were involved in the discussions [5], reports indicate that seven parties provided general support to the proposal [8]. This broad alignment suggests that the eventual passage of the Imperial House Law amendments is highly likely.

Despite the general agreement, some political leaders expressed concern over the process. Yuichiro Tamaki, leader of the Democratic Party for the People, said the situation was chaotic [9].

"It is a worrying situation where even the amendment of the Imperial House Law cannot proceed smoothly or amicably," Tamaki said [9].

“Maintaining the size of the family is essential for the nation's dignity and continuity”

The move to allow female members to retain their status and integrate male descendants from former princely lines represents a significant shift in Japan's rigid succession traditions. By securing a wider pool of eligible family members, the government aims to prevent a succession crisis without necessarily granting the throne to a female emperor, which remains a point of contention among conservatives.