Reporting from war-torn countries around the world, especially in Africa and the Middle East, he focused on the life and humanity of the ordinary citizens in difficult times. His works include books and DVDs on blood diamonds and child soldiers in Sierra Leone, the Rwandan conflict and its survivors, a teenage mother in an Estonian "AIDS village", and girls and education in Afghanistan. In 2006, he won the Sankei Children's Book Award for his 2005 book titled "Daiyamondo yori Heiwa ga Hoshii" ("I Want Peace Rather Than a Diamond"). His video reports appeared on Japanese national networks including NHK and TV Asahi.