Harunobu Kameda updated the momentohq/public-dev-docs repository by standardizing terminology from MediaStore to Momento Media Storage and reorganizing the Japanese documentation under a unified i18n/ja structure. Using Markdown and documentation best practices, Harunobu implemented six commits that renamed files and clarified language, improving consistency across the codebase. This work enhanced maintainability and prepared the documentation for future localization automation, making it easier for new developers to onboard and for teams to maintain cross-language parity. The changes focused on documentation structure and terminology alignment, laying a solid foundation for scalable internationalization and more accessible API guidance in the future.