During September 2025, Hmy focused on backend development for the open-ani/animeko repository, addressing data accuracy in episode airing information. Hmy implemented a targeted bug fix in Kotlin to ensure only main story episodes were included in airing calculations, resolving an issue where special episodes previously distorted results. The solution involved updating data modeling logic and introducing comprehensive unit and regression tests to validate correct behavior and prevent future miscounts. By collaborating through co-authored commits and maintaining clear traceability, Hmy improved data reliability for both user-facing features and downstream analytics, demonstrating strong skills in backend development, data modeling, and unit testing.