In 1977, he obtained a medical license in Japan. After working in one of the most remote islands of Japan (1800 km from Tokyo), he studied tropical medicine at the University of Bordeaux Ⅱ in France (1990-92). He then became involved in international cooperation and worked for the National Center for Global Health and Medicine (NCGM) in Japan. Assigned to approximately 40 countries, including Latin America, Southeast Asia, the Middle East, and Africa. He has been engaged in various areas such as maternal and child health, community health, health human resource development, health system development and the NTDs. In particular, he has worked in French-speaking African countries for a long time, including Republic of the Congo where he worked for WHO/AFRO. He was also seconded to the International Cooperation Office of the Japanese Ministry of Health and deepened his knowledge of international health. In recent years, he has been mainly engaged in cooperation with Senegal, focusing on UHC and CMU. Since this year, he is working for supporting UHC in Côte d’Ivoire.