Have a different issue not covered here? The ryuugames game download process changes whenever file hosts update their policies. Always check the comment section under each game post for user-uploaded mirrors.
: To prevent "Mojibake" (garbled text) or crashes, it is highly recommended to set your Windows system locale to Japanese. Alternatively, use a tool like Locale Emulator to run specific applications in a Japanese environment. ryuugames game download tutorial
They often feature a "Required Software" section to ensure you have the necessary Visual C++ packages. Have a different issue not covered here