Prince Hisahito of Akishino
Before his birth, the ongoing Japanese imperial succession debate had resulted in some politicians holding a favorable view on removing agnatic primogeniture imposed by World War II allies on the constitution of Japan. However, once Hisahito was born in 2006 he became next in the line of succession following his father. Hisahito's cousin and Emperor Naruhito's only child Princess Aiko remains at present legally unable to inherit the throne, while debate about the possibility of having future empresses regnant continues.