Motoki Nakata is an assistant professor at the Fusion Theory and Simulation Research Division in National Institute for Fusion Science(NIFS). He received his Ph.D. degree in 2011 from the Graduate University for Advanced Studies. His research subject is the first-principle based 5D gyrokinetic simulations of turbulence and transport in tokamak and stellarator plasmas. He has also developed a kinetic approach for the nonlinear interactions among turbulent vortices and zonal flows, and they are widely applied to various problems in plasma turbulence research. He is also extending the simulation model and optimization technique for the next-generation high performance computers.