Ryuichi Kaneko, the former Deputy Director-General, National Institute of Population and Social Security Research, Tokyo, and the former president of the Population Association of Japan, is currently a professor of Meiji University in Tokyo. He majored in biology and physical anthropology at the University of Tokyo and received a PhD in demography from the University of Pennsylvania, USA. He is a former research fellow of Princeton University, and Rockefeller University. He directed the official population projections for Japan over the decades, while teaching population science at the University of Tokyo, Ochanomizu University, and some others. He is the author and editor of Population Trends in Japan and Future Society (2017), Japan in the Post-demographic Transition Period (2016). He is also a member of the Science Council of Japan and makes policy proposals to the government and the public.