Government of Japan
The Current Emperor of Japan (今上天皇) is Akihito. He was officially enthroned on November 12, 1990. He is styled as "His Imperial Majesty" (天皇陛下), and his reign bears the era name of Heisei (平成). Naruhito, the Crown Prince of Japan, is the heir apparent to the Chrysanthemum Throne.
Emperor of Japan
Historically, the succession to the Chrysanthemum Throne has always passed to descendants in male line from the imperial lineage. Generally, they have been males, though over the reign of one hundred monarchs there have been nine women (one pre-historical and eight historical) as Emperor on eleven occasions.