Worked on enhancing documentation within the pgsql-jp/jpug-doc repository, focusing on subscription and logical decoding guides. Leveraged AI-assisted development and technical writing skills to update SGML files, addressing grammar and clarity issues in Japanese-language documentation. Improvements included refining the create_subscription and alter_subscription guides to clarify option behaviors and correct sentence structure, as well as updating logicaldecoding documentation to better explain standby slot persistence for data integrity. These targeted changes aimed to align localization, improve readability, and support developer onboarding. The work emphasized precise language and documentation standards, contributing to more accessible and accurate technical resources for the developer community.