Prince Hisahito, Emperor Akihito's grandson and soon-to-be second in line to the Chrysanthemum throne following the abdication of the emperor next spring, turned 12 on Thursday.After the 84-year-old emperor abdicates next April 30, his eldest son Crown Prince Naruhito will ascend the throne the following day, and his brother Prince Fumihito -- the only other male member of his generation in the Japanese imperial family -- will become first in line to succeed him.Prince Hisahito, so far the only male of his generation, will then become second in line.Imperial House Law states that only males…READ FULL ARTICLE