Worked on the YerongAI/Office-Tool repository to deliver a targeted Japanese localization update, focusing on correcting the 'Clear list' translation and ensuring that corrupted-installation error messages display in Japanese. Used XAML to update interface strings and applied localization best practices to enhance the user experience for Japanese-speaking users. The approach emphasized internationalization (i18n) and translation quality assurance, with all changes linked to a specific issue for traceability. Established a clear, commit-based workflow that supports future multilingual updates. This work laid the groundwork for robust localization processes, addressing gaps in Japanese language support and improving overall product accessibility.