In recent years, Miyazaki has taken a more prominent position in
humanitarian activism projects. She travelled with her older brother and fellow actor, Masaru Miyazaki, to Bangladesh in 2005 to experience poverty firsthand, and they highlighted the problems then found in their 2006
photobook Tarinai Peace. The siblings travelled to Denmark and Finland in 2006 to investigate global warming. Their experiences were then published in their 2007 photobooks
Love, Peace, and
Green Tarinai, Peace2. Miyazaki took part in the Gold Ribbon Walking event in
Roppongi, Tokyo in 2008 to raise awareness and funds for childhood
cancer. Her 2008 film,
Children of the Dark, addresses issues of child exploitation. == Personal life ==