Harry Kim enhanced Sonarr/Sonarr’s media parser to support Korean 'F1RST' releases, addressing a gap in handling non-English naming conventions. He updated regular expressions in the C# backend to accurately identify and parse these releases, ensuring that Korean titles are correctly recognized and categorized. To validate the changes, Harry developed targeted unit tests, maintaining strong test coverage and traceability throughout the process. His work improved automation and reduced the need for manual corrections in media libraries. Over the month, he focused on backend development and unit testing, delivering a robust feature without introducing new bugs or regressions into the repository.