Princess Aiko has full rights to the throne.

Princess Masako gave birth to Princess Aiko in 2001, after which the pressure to have a boy only increased.

Princess Aiko would be a "pinch hitter," he added, the same way the previous eight empresses had been.

December 1: Princess Aiko, potential heiress to the Imperial throne, is born.

Princess Aiko began her education at Gakushuin Kindergarten on April 3, 2006.

In November 2011, Princess Aiko was hospitalised with pneumonia.

Therefore, it seems unlikely that the succession laws will be changed to allow Princess Aiko to become reigning Empress.

When the couple finally had a child, it was a girl, Princess Aiko.

If the proposal passes, Princess Aiko would be first in line to succeed her father.