The aim of this research project is to realize multiscale Agent-Based Social Simulation (ABSS) methodology, named D 3 , which covers from micro individual behavior to macro economical activity for the evidence/model-based social policy makings. As the first step we focus on COVID-19 problem, and try to clarify the well-balanced social policy between infectious disease control measures and stimulative counterplan into the economy. We will extend our research target from COVID-19 to general

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... hensive social problems, and try to clarify the effectiveness of D 3 (Digital Democratizing Designer for social decision making) as social policy making methodology towards the realization of Society 5.0.