During February 2025, Najieun developed and expanded structured study materials for the havuruta/2025-CS-OS and havuruta/2025-CS-Network repositories, focusing on enhancing educational content for computer science students. She authored detailed study questions and explanations in Markdown, covering topics such as RAM, ROM, CPU-memory interactions, compiled languages, and networking fundamentals. Her technical writing and documentation skills ensured clarity and maintainability, supporting both student learning and future content updates. Najieun’s work emphasized depth by providing comprehensive explanations and practice questions, aligning closely with course outcomes. No bugs were addressed, as her contributions centered on feature development and documentation quality improvement.