He received his Ph.D. from the University of Tokyo in 2008, after which he worked at Nagoya University as a postdoctoral researcher. He then moved to the University of Tokyo in 2012. He mainly works on theoretical and numerical studies of collisionless shocks and associated high-energy particle acceleration. His work is relevant for Earth and planetary bow shocks, as well as supernova remnant shocks. He is also interested in astrophysical plasma phenomena.