Professor of Cultural Anthropology at the Graduate School of Arts and Sciences, the University of Tokyo. During the years from 1996 to 1998, as a member of the Japan Overseas Cooperation Volunteers (JOCV), he was engaged in greening and rural development activities to prevent desertification in the Republic of Niger. He received his doctoral degree from the University of Tokyo in 2004. He was an assistant professor at the Center for Asia Pacific Studies, Waseda University from 2000 to 2003, and he was a faculty member at Aoyama Gakuin Women's Junior College from 2003. He went abroad again as a visiting scholar at the Laboratory of Bioculture and Anthropology, Faculty of Medicine, Mediterranean University, France in 2010. He joined the faculty of the University of Tokyo in October 2011. Since January 2012, from the perspective of "human security," he has continued to conduct research on the lives and problems of people in Fukushima after the nuclear accident, and in 2016 he finished his research and compiled it into "Public Anthropology of Earthquake Disaster Reconstruction: Working with Fukushima Nuclear Accident Victims and Tsunami Victims (in Japanese)" [co-edited with Hiroki Takakura] (University of Tokyo Press, 2019).