Crown Prince Fumihito, Crown Princess Kiko and their son Prince Hisahito returned Sunday from a weeklong private family vacation in Bhutan, the first overseas trip for the 12-year-old heir to the Chrysanthemum Throne.The family of the crown prince, the younger brother of Emperor Naruhito, met Bhutanese King Jigme Khesar Namgyel Wangchuck, Queen Jetsun Pema and their 3-year-old son Prince Jigme Namgyel Wangchuck on Monday and spent time together in the capital city of Thimphu.Related coverage:IN PHOTOS: 12-yr-old Prince Hisahito's 1st overseas trip in BhutanREAD FULL ARTICLE