Japan's imperial family has just 16 members, only five of them men, most elderly; if Prince Hisahito, 19, has no son, the dynasty could end; though 70% support female succession, parliament is blocking popular Princess Aiko, 24

A law set to pass Friday by Japan’s parliament could doom its 1,500-year-old hereditary institution by insisting that only men can be emperor, sparking worry about the shrinking,…

A popular princess drives support for having a female Japanese Emperor. But the country's first female prime minister opposes it.