JAPAN : Emperor Akihito of Japan formally stepped down Tuesday, the first abdication for 200 years in the world’s oldest monarchy, as his son Naruhito prepared to take the Chrysanthemum Throne and usher in a new imperial era. In the “Room of Pine” in Tokyo’s Imperial Palace, the popular 85-year-old performed the abdication ritual in the presence of the imperial regalia -- an ancient sword and sacred jewel that are considered to legitimise an emperor.