More than 10,000 children in Japan have been conceived through what's called donor insemination. It's a kind of assisted reproductive technology that allows couples to have children using donated sperm. It was introduced in Japan more than 60 years ago. Donors remain anonymous, and most children are not informed they were conceived in this way. Japan's ruling party is preparing the country's first bill on assisted reproductive technology. The draft says access to information about donors is to be decided at a later time. But some people say they want to know their genetic origins now.NHK World's Atsuko Iwasaki has the story.