- Princess Mako (23 October 1991)
- Princess Kako ( 29 December 1994)
- Prince Hisahito (6 September 2006)
Prior to his son's birth in 2006, there was a succession controversy as his brother's only child was a female. At present, males can only inherit the throne. Unless the laws change or The Crown Prince has a son, it is likely that Prince Hisahito will reign as Emperor.