Professor of Economics at Keio University in Tokyo, specializes in international trade and trade policy. She was chairman of the Financial Crisis Management Committee for the Deposit Insurance Corporation in 1988. She is a member of the Council on Monetary System, Fiscal System Council, and the Economic Council to the Prime Minister. She is the coauthor of Measuring the Costs of Protection in Japan (1995), with Hiroki Kawai and Shujiro Urata.