I was born in Aichi Prefecture, Japan in 1984. I received my Ph.D. degree in 2012 from University of Tokyo. After I worked for University of Tsukuba, from 2017 I joined the Graduate School of Education, the University of Tokyo. My general interests are developing and applying statistical methods for behavioral science. Methodologically, my current lines of research include (a) latent growth curve modeling for evaluating within-person changes and its individual differences, (b) developing and investigating the unified framework for longitudinal models to examine reciprocal relations between longitudinally observed variables, and (c) within-person variability score-based causal inference for joint effects of time-varying treatments. In addition, I am collaborating with substantive researchers on a number of topics relating to educational, psychological and medical research.