Mikachu focused on enhancing documentation and branding across open-source repositories, notably Ac-Wiki and huiyadanli/Snap.Hutao. For Ac-Wiki, Mikachu overhauled project documentation, unified naming conventions, and introduced new issue templates to streamline onboarding and improve contributor workflows, leveraging Markdown and YAML for content and configuration management. In Snap.Hutao, Mikachu delivered sponsor recognition features by adding SVG assets and updating the README to improve sponsor visibility and branding consistency. The work emphasized maintainability and clarity, with a technical approach centered on information architecture, refactoring, and technical writing, resulting in more accessible, well-structured repositories ready for future contributions.