
Over a ten-month period, contributed to the keiyoushi/extensions-source and KotatsuApp/Kotatsu repositories by building and maintaining a diverse suite of manga reader extensions and app features. Delivered robust source integrations, advanced filtering, and localization, notably expanding Indonesian language support and improving search workflows. Applied Kotlin, Gradle, and Next.js to implement scalable API integrations, resilient data parsing, and UI enhancements. Addressed reliability through disciplined bug fixing, domain hygiene, and error handling, ensuring stable operation across changing content sources. The work demonstrated depth in backend and mobile development, with a focus on maintainability, internationalization, and user experience across both web and Android platforms.
June 2026: Across keiyoushi/extensions-source, delivered core features enabling multilingual content, improved reliability under Cloudflare protections, and expanded source coverage. Key features delivered include Manta SourceFactory migration supporting Spanish, new Wurmz source extension, Comicaso consolidation to a v3 static API with CDN fallback, Doujindesu URL compatibility improvements, and Manhuarm synopsis translation feature. Major bugs fixed include MissingFieldException handling in Manta, MGKomik Cloudflare rate-limiting and header cleanup, decorative filter handling in Mangadotnet, Cloudflare image blocking bypass in Komiku, and extensive URL/slug fixes for Doujindesu. Overall, these efforts improved data accuracy, performance, localization reach, and reliability, driving higher trust and engagement. Technologies and skills demonstrated: SourceFactory migrations, DTO normalization, timestamp/ISO parsing, advanced HTTP headers and rate limiting, Jsoup and Next.js RSC parsing, deep linking, static API design, CDN fallbacks, and localization workflows.
June 2026: Across keiyoushi/extensions-source, delivered core features enabling multilingual content, improved reliability under Cloudflare protections, and expanded source coverage. Key features delivered include Manta SourceFactory migration supporting Spanish, new Wurmz source extension, Comicaso consolidation to a v3 static API with CDN fallback, Doujindesu URL compatibility improvements, and Manhuarm synopsis translation feature. Major bugs fixed include MissingFieldException handling in Manta, MGKomik Cloudflare rate-limiting and header cleanup, decorative filter handling in Mangadotnet, Cloudflare image blocking bypass in Komiku, and extensive URL/slug fixes for Doujindesu. Overall, these efforts improved data accuracy, performance, localization reach, and reliability, driving higher trust and engagement. Technologies and skills demonstrated: SourceFactory migrations, DTO normalization, timestamp/ISO parsing, advanced HTTP headers and rate limiting, Jsoup and Next.js RSC parsing, deep linking, static API design, CDN fallbacks, and localization workflows.
May 2026 monthly summary for keiyoushi/extensions-source focused on delivering robust, scalable source integration and reliability improvements across the multi-src ecosystem. Highlights include domain/URL hygiene, new multisrc theme support, and targeted bug fixes that reduced failure modes and improved data quality for end users.
May 2026 monthly summary for keiyoushi/extensions-source focused on delivering robust, scalable source integration and reliability improvements across the multi-src ecosystem. Highlights include domain/URL hygiene, new multisrc theme support, and targeted bug fixes that reduced failure modes and improved data quality for end users.
April 2026 performance highlights for keiyoushi/extensions-source: Key features delivered include NatsuId theme filtering enhancements for precise content curation; DoujinDesu (Unoriginal) extension with Next.js data handling, advanced listing filters, and deep linking; and AstralScans extension improvement with anti-scraper optimized chapter fetching and updated versioning. Major bugs fixed include MissingFieldException handling for Manga isNovel (default false) and the regression revert in Hive Scans to restore prior behavior, along with SafeStringSerializer introducing robust JSON decoding to prevent crashes. Overall impact: improved data reliability, richer filtering capabilities, and more robust cross-repo extensions, delivering tangible business value through better user experience and stable data pipelines. Technologies/skills demonstrated: Next.js data handling, JSON API integration, Android deep linking and manifest configuration, anti-scraper techniques, robust JSON decoding, version control and repo-pattern discipline, cross-team collaboration.
April 2026 performance highlights for keiyoushi/extensions-source: Key features delivered include NatsuId theme filtering enhancements for precise content curation; DoujinDesu (Unoriginal) extension with Next.js data handling, advanced listing filters, and deep linking; and AstralScans extension improvement with anti-scraper optimized chapter fetching and updated versioning. Major bugs fixed include MissingFieldException handling for Manga isNovel (default false) and the regression revert in Hive Scans to restore prior behavior, along with SafeStringSerializer introducing robust JSON decoding to prevent crashes. Overall impact: improved data reliability, richer filtering capabilities, and more robust cross-repo extensions, delivering tangible business value through better user experience and stable data pipelines. Technologies/skills demonstrated: Next.js data handling, JSON API integration, Android deep linking and manifest configuration, anti-scraper techniques, robust JSON decoding, version control and repo-pattern discipline, cross-team collaboration.
March 2026 delivered substantial feature work and stability improvements across the keiyoushi/extensions-source portfolio, with a focus on UX-enhanced filtering, robust data handling, and expanded source support. The work reduced friction for users and improved resilience against site changes, while expanding business value through richer search and filtering capabilities and better localization.
March 2026 delivered substantial feature work and stability improvements across the keiyoushi/extensions-source portfolio, with a focus on UX-enhanced filtering, robust data handling, and expanded source support. The work reduced friction for users and improved resilience against site changes, while expanding business value through richer search and filtering capabilities and better localization.
February 2026 highlights substantial expansion and stabilization of the extensions catalog under keiyoushi/extensions-source. Delivered broad source enrichment, domain updates, and improved reliability across multiple sources, enabling a richer user experience and easier maintenance. Key features delivered include new source integrations (Holotoon, Roseveil, Pramramadhan, LepoyTL, LumireVerse, Bacami, OkyyKomik, SoftKomik, Mangakuri, UlasComic) and language/icon updates (Mihentai), plus domain/base URL changes for MikoRoku. Also introduced data saver and relevance sorting in WeebDex and foundational improvements for header management and error handling. The work established a scalable foundation for adding sources and improving resilience across the extension ecosystem, directly supporting catalog completeness, reliability, and user satisfaction.
February 2026 highlights substantial expansion and stabilization of the extensions catalog under keiyoushi/extensions-source. Delivered broad source enrichment, domain updates, and improved reliability across multiple sources, enabling a richer user experience and easier maintenance. Key features delivered include new source integrations (Holotoon, Roseveil, Pramramadhan, LepoyTL, LumireVerse, Bacami, OkyyKomik, SoftKomik, Mangakuri, UlasComic) and language/icon updates (Mihentai), plus domain/base URL changes for MikoRoku. Also introduced data saver and relevance sorting in WeebDex and foundational improvements for header management and error handling. The work established a scalable foundation for adding sources and improving resilience across the extension ecosystem, directly supporting catalog completeness, reliability, and user satisfaction.
January 2026 performance snapshot for keiyoushi/extensions-source. Focused on delivering scalable content integration, reliability improvements, and maintainable code patterns across extensions, with an emphasis on business value and user experience.
January 2026 performance snapshot for keiyoushi/extensions-source. Focused on delivering scalable content integration, reliability improvements, and maintainable code patterns across extensions, with an emphasis on business value and user experience.
December 2025 monthly performance summary for keiyoushi/extensions-source: Delivered the Shinigami Manga Search Filters feature, adding user-facing filters for sort order, status, format, type, and genre to improve discovery and findability. Fixed Ainz Scans ID extension by updating the base URL, ensuring reliable functionality and applying a version bump for release readiness. These changes reflect disciplined version management and improved extension stability, contributing to better user experience and maintainability. Demonstrated technical proficiency in extension development, parser integration, URL/domain management, and release practices.
December 2025 monthly performance summary for keiyoushi/extensions-source: Delivered the Shinigami Manga Search Filters feature, adding user-facing filters for sort order, status, format, type, and genre to improve discovery and findability. Fixed Ainz Scans ID extension by updating the base URL, ensuring reliable functionality and applying a version bump for release readiness. These changes reflect disciplined version management and improved extension stability, contributing to better user experience and maintainability. Demonstrated technical proficiency in extension development, parser integration, URL/domain management, and release practices.
Monthly summary for 2025-11 focusing on business value and technical achievements. The month centered on delivering a key localization feature for KotatsuApp/Kotatsu, enhancing accessibility for Indonesian users and enabling market expansion. No major bugs were reported; the primary effort was polish and readiness of localization assets.
Monthly summary for 2025-11 focusing on business value and technical achievements. The month centered on delivering a key localization feature for KotatsuApp/Kotatsu, enhancing accessibility for Indonesian users and enabling market expansion. No major bugs were reported; the primary effort was polish and readiness of localization assets.
Month: 2025-10 — Performance Review Summary Key features delivered: - Indonesian Localization: Completed full UI localization for Indonesian users, enabling broader market reach and better accessibility. Implemented via Weblate across three commits, ensuring consistent translations across the app. Commits: 9ef961590d5f0226a561bf2ce179875bc9332a46; d5fbb006768f94149f7d066d0c39b133e9be92aa; 4e2e190547340652a3483b237ce5e242b84f45d0. - Saved Search Filters: Introduced a persistent saved filters feature allowing users to save, rename, apply, and delete custom manga search filters with a dedicated UI to manage them. Commit: 5fb8ff53f9dab8587142d849f558b23ee9b76efd. - Advanced search filtering options: Enhanced search with options to pin sources and hide empty results, improving search relevance and usability. Commit: 119b7c2ac74863435615bfbec5cbaf5d6d1a661a. Major bugs fixed: - No major bugs reported or fixed this month based on available data. Overall impact and accomplishments: - Expanded access to Kotatsu by delivering Indonesian localization, which opens up a significant regional user base and improves user satisfaction. - Improved search experience and efficiency with saved filters and advanced filtering options, likely increasing user engagement and reducing time-to-find results. - Demonstrated end-to-end capabilities from localization tooling (Weblate) to UI/UX enhancements and search backend support, delivering measurable product improvements within a single release cycle. Technologies/skills demonstrated: - Localization workflow with Weblate integration for scalable translations. - UI/UX improvements for saved filters and advanced search options. - Robust feature development with commit-driven traceability across repository KotatsuApp/Kotatsu.
Month: 2025-10 — Performance Review Summary Key features delivered: - Indonesian Localization: Completed full UI localization for Indonesian users, enabling broader market reach and better accessibility. Implemented via Weblate across three commits, ensuring consistent translations across the app. Commits: 9ef961590d5f0226a561bf2ce179875bc9332a46; d5fbb006768f94149f7d066d0c39b133e9be92aa; 4e2e190547340652a3483b237ce5e242b84f45d0. - Saved Search Filters: Introduced a persistent saved filters feature allowing users to save, rename, apply, and delete custom manga search filters with a dedicated UI to manage them. Commit: 5fb8ff53f9dab8587142d849f558b23ee9b76efd. - Advanced search filtering options: Enhanced search with options to pin sources and hide empty results, improving search relevance and usability. Commit: 119b7c2ac74863435615bfbec5cbaf5d6d1a661a. Major bugs fixed: - No major bugs reported or fixed this month based on available data. Overall impact and accomplishments: - Expanded access to Kotatsu by delivering Indonesian localization, which opens up a significant regional user base and improves user satisfaction. - Improved search experience and efficiency with saved filters and advanced filtering options, likely increasing user engagement and reducing time-to-find results. - Demonstrated end-to-end capabilities from localization tooling (Weblate) to UI/UX enhancements and search backend support, delivering measurable product improvements within a single release cycle. Technologies/skills demonstrated: - Localization workflow with Weblate integration for scalable translations. - UI/UX improvements for saved filters and advanced search options. - Robust feature development with commit-driven traceability across repository KotatsuApp/Kotatsu.
September 2025 — Kotatsu App monthly summary highlighting delivery of core features, UX stabilization, and accessibility improvements. Key outcomes include improved navigation in webtoon mode via pull gestures, real-time favorites with local storage, offline data access for manga descriptions, and Indonesian translations to broaden audience. A UI visibility fix when the Control Panel is shown also enhanced usability. These efforts boosted user engagement, data consistency, and reliability across offline and online scenarios.
September 2025 — Kotatsu App monthly summary highlighting delivery of core features, UX stabilization, and accessibility improvements. Key outcomes include improved navigation in webtoon mode via pull gestures, real-time favorites with local storage, offline data access for manga descriptions, and Indonesian translations to broaden audience. A UI visibility fix when the Control Panel is shown also enhanced usability. These efforts boosted user engagement, data consistency, and reliability across offline and online scenarios.

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