Imperial Household Law
From 2005 to 2012, Japan discussed the possibility of changing the laws of succession to the Chrysanthemum Throne, which is currently limited to males of the Japanese Imperial Family. As of 2020, there are three people in the line of succession to the current Emperor Naruhito: Prince Akishino, Prince Hisahito, and Prince Hitachi. Prior to the birth of Prince Hisahito in 2006, the government of Japan considered changes to the Imperial Household Law to allow additional potential successors to the throne.