This document discusses how open source communities and makers in Japan are responding to the COVID-19 pandemic. It notes that over 2,000 open source software enthusiasts in Japan have remained active online by developing services to support the crisis response through open source tools like GitHub and Slack. One active community, Code for Japan, created an open source COVID-19 information portal that has spread to local governments. The document also discusses how Japanese open source hardware makers have started online activities like sharing ideas for DIY sanitization tools and activities to keep people engaged working from home. It concludes that cooperation, not isolation, will help humanity overcome this global challenge.