Hideki Maruyama is a professor of the Faculty of Global Studies at Sophia University. After graduating from the Faculty of Education, Okayama University, he was dispatched as a science teacher in the Japan Overseas Cooperation Volunteers (JOCVs) program of Japan International Cooperation Agency (JICA). He completed the Graduate School of International Cooperation Studies at Hiroshima University and worked as a senior researcher in the Department of International Research and Co-operation of the National Institute for Educational Policy Research (NIER) at the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT). He also served as an advisor to JICA on literacy and non-formal education and as a member of the Steering Committee of the OECD-PISA Governing Board. He conducts education programs such as “Sophia Program for Sustainable Futures: SPSF” and “Field Study to Estonia and others for Sustainability.” His research topics are Sustainable Education, ESD, and Well-being. His recent publication is “Cross-Bordering Dynamics in Education and Lifelong Learning: A Perspective from Non-Formal Education” (Routledge, 2020).