Somebody threw off his groove. Emperor Akihito could be close to abdicating his throne, sources close to his family say. Many suspect the 82-year-old’s recent poor health is the motive, though the Imperial Household Agency has denied the rumors. Akihito’s son, Naruhito, would succeed him. As monarchies fall out of fashion, abdication has become a more frequent option for Europe’s royal families. But this would be the first time a Japanese emperor voluntarily gave up the Chrysanthemum Throne in two centuries, and might even require revising imperial law.