Tokyo, July 10, 2026
Japan's lower house passed a bill on July 10, 2026, to reform the Imperial House, aimed at securing the succession in the world's oldest hereditary monarchy.
Japan's lower house has passed a bill representing the first significant change to the Imperial House Law in effect since 1947. Parliament is thereby responding to the dramatic lack of male heirs in the world's oldest hereditary monarchy. The bill must now still pass the upper house before it can take effect.
Background: Precarious Demographic Situation
The background of the pressure for reform is the precarious demographic situation of the Imperial House. The imperial family currently counts only 16 members. Under the current regulation, only three men are considered as successors to the 66-year-old Emperor Naruhito: Naruhito's brother, Crown Prince Akishino (60), his 19-year-old son Prince Hisahito, as well as Naruhito's 90-year-old uncle Prince Hitachi.
