I've briefly played with Windows 10 and tried these installation methods: upgrading from Windows 8, as well as a clean install.   In both cases, the Japanese fonts like MS Gothic are not installed by default in Windows 10 (despite them being included in previous versions of Windows) which means they'll need to be installed from the control panel.   To do that.... 1. bring up the Start Menu -> Settings 2. click System 3. pick Apps & Features (on the left) 4. choose Manage optional