During June 2025, Qew8502 focused on enhancing documentation and repository organization for the krafton-jungle/KJ-ALGO-BOOK-9-303 and KJ-DS-BOOK-9-303 projects. They authored comprehensive Markdown documentation for core data structures, including Hash Table, Trie, and Binary Heap, detailing definitions, operations, and practical applications such as priority queues and heap sort. Their work involved restructuring repository files, updating README guides, and improving contributor instructions to streamline onboarding and maintainability. By leveraging skills in technical writing, Git, and data structures, Qew8502 delivered depth in documentation and cross-repo consistency, addressing discoverability challenges and reducing support overhead for future contributors.