It seems nowadays the Imperial Agency has permitted them to speak English and no more translators. I saw on Malaysian national tv last night, they conversed in English with King of Malaysia.
Japanese Emperor Akihito and Empress Michiko smile as they leave a hotel in Kuala Lumpur for the aiport to proceed for their next visit to Bangkok. Emperor Akihito and Empress Michiko will attend celebrations for the 60th anniversary of Thai King Bhumibol Adulyadej's coronation.
Emperor Akihito and Empress Michiko returned home on June 15 after a week East Asian Tour. They were welcomed by the Prince Naruhito, Princess Masako, Prince Akishino and other members of the Imperial Family at Haneda Airport.
#1: NNN news
#2: JIJI press
#3: Mainichi news