Some Japanese women who in their childhood were victims of pornography have written about their fears and anguish in being betrayed by adults they had trusted, and in imagining that lewd images of themselves as young children could be still circulating on the Internet.

In a letter to the Japan Committee for UNICEF, a college student in the Kanto region said she was sexually abused by her uncle, who took photos of her for six years from the age of 5.

"I didn't understand what he was doing (at first), and smiled in responding to his requests," she wrote.