He has been worked in the field of Environmental Education, ESD, Education for Sustainable Consumption in the Asia-Pacific Region. Before he joined the Tokyo City University, He worked, as a Research Associate at the Institute of Global Environmental Strategies (IGES), and as Senior Programme Specialist at the Asia/Pacific Cultural Center for UNESCO (ACCU). He has also been involved in various policy processes, capacity building programmes, educational implementation processes for sustainability at national and Asia-Pacific regional level. Currently, he is working as Visiting Professor of UNU-IAS, JICA Technical Advisor (Environmental Education), member of national ESD round table meeting, board of Japanese Academic Society of Environmental Education, and lecturers of the Undergraduate/ Post Graduate Prorgammes in some academic institutions.