TOKYO Japan 's Studio Ghibli turns 40 this month with two Oscars and legions of fans young and old won over by its complex plots and fantastical hand-drawn animation. But the future is uncertain, with latest hit "The Boy and the Heron" likely — but not certainly — the final feature from celebrated co-founder Hayao Miyazaki , now 84. The studio behind the Oscar-winning "Spirited Away" has become a cultural phenomenon since Miyazaki and the late Isao Takahata established it in 1985. Its