Prime Minister Saeko Takashi said male children of princes adopted from former collateral houses could potentially become emperor [1].

The proposal seeks to address the dwindling number of imperial family members and ensure the continuity of the throne. By allowing the adoption of male descendants from former collateral branches, the government aims to maintain a male-line succession without altering the fundamental requirement for male-lineage heirs.

During a debate in the National Diet on July 7 [1], Takashi addressed the potential for these children to ascend the throne. She said that while it is not decided that a male child would necessarily become emperor, it is a possibility as the government will not disregard the established order of succession [1].

This discussion follows a consensus reached by 13 parliamentary party groups [2]. The agreement covers two primary proposals: allowing female imperial family members to retain their status after marriage, and the adoption of male descendants from former collateral houses [2].

However, the prime minister clarified that the status of imperial family membership would not extend to the spouses of female imperial family members [1]. This distinction maintains a boundary between the core imperial lineage and those entering the family through marriage.

Questions regarding the specific status of these adoptees remain. While Takashi noted the possibility of succession [1], other reports suggest that such an adoption would only make the individuals external relatives of the emperor rather than direct heirs [1].

Government spokespersons have reiterated that the throne is reserved for male descendants of the male line [3]. They said that female or matrilineal emperors are not recognized under current interpretations of the law [3].

“Male children of princes adopted from former collateral houses could potentially become emperor.”

The Japanese government is attempting to balance the preservation of traditional male-line succession with the practical reality of a shrinking imperial pool. By exploring the adoption of descendants from former collateral branches, the administration seeks a middle ground that avoids the controversial step of allowing female succession while still expanding the number of eligible male heirs.