Japanese Crown Prince Naruhito attends a wedding in Luxembourg in 2012. He is the oldest son of Emperor Akihito.
Nicolas Lambert/AFP/Getty Images
Updated 12:01 PM EDT, Wed May 1, 2019
Japan's much-loved Emperor Akihito stood down Tuesday, becoming the first Japanese monarch to abdicate his post in two centuries.
Crown Prince Naruhito, who has already assumed some of his father's duties, became the country's 126th Emperor on Wednesday.
Naruhito will usher in the "Reiwa" era.