There are only three people in line to inherit Japan's Chrysanthemum Throne, and one of them is 90 years old. All three of them are men.

There are only three people in line to inherit Japan's Chrysanthemum Throne, and one of them is 90 years old. All three of them are men.

Japan is running out of royals, and it is putting the world's oldest continuous hereditary monarchy at risk.