Following a series of remarks by influential people playing down Japan's wartime sex slavery, a Tokyo museum has launched a five-month exhibition aimed at young people to provide a basic picture of the atrocity.

Many panels in the "Exhibition of 'Comfort Women' for Junior High School Students" explain how sex slavery started in many parts of Asia where the Japanese military advanced and how the system operated.

"Comfort woman" is a euphemism used to refer to wartime sex slaves.