The Supreme Order of the Chrysanthemum is Japan's highest order. The Grand Cordon of the Order was established in 1876 by Emperor Meiji of Japan; the Collar of the Order was added on 4 January 1888. From Wikipedia
The cabinet approved awarding Hisahito the Grand Cordon of the Order of the Chrysanthemum on his 19th birthday after postponing the ceremony for university exams.
