Contributed a targeted content enhancement to the chrom9103/PiPi_Git-intro repository by creating a dedicated Markdown asset, Hiro.md, for the 2025 lecture series. This work involved authoring clear, bilingual-friendly documentation to introduce a new participant, supporting improved onboarding and future reuse in educational sessions. The implementation focused on content quality and maintainability, leveraging Markdown for structured presentation and version control for safe, low-risk delivery. No defects were introduced, as the change was isolated to documentation assets. The contribution demonstrates attention to detail in technical writing and content management, with an emphasis on clarity, reusability, and seamless integration into existing materials.