He received his B.A. from Division of Natural Sciences, International Christian University in 1999, and his M.A. and Ph.D. from Graduate School of Arts and Sciences, the University of Tokyo in 2002 and 2005, respectively. He belonged to Tsukuba Advanced Research Alliance, University of Tsukuba as a postdoctoral researcher from April 2005 to March 2006, Graduate School of Humanities and Sociology, the University of Tokyo as an assistant professor from April 2006 to March 2010, Graduate School of Education, the University of Tokyo as an assistant professor from April 2010 to March 2014, and College of Information Science & Engineering, Ritsumeikan University as a lecturer from April 2014 to February 2018, respectively.