Worked on the team-mirai-volunteer/action-board repository to enhance branding consistency and user experience by aligning terminology across both the frontend and database layers. Focused on replacing the term ボランティア with サポーター throughout user-facing UI elements, such as the level-up dialog, and within SQL migration scripts that define mission descriptions. This approach ensured cohesive messaging and improved maintainability by centralizing terminology handling. Utilized TypeScript for frontend updates and SQL for database migrations, laying the groundwork for future localization efforts. The work emphasized careful coordination between interface text and data definitions, supporting a more unified and adaptable application structure.