Masahiro Iuchi contributed to the Perl/perl5 repository by enhancing documentation and improving code readability across both C and Perl source files. Focusing on code maintenance and typo correction, Masahiro added author metadata to the AUTHORS file and systematically corrected comment typos, reducing ambiguity and supporting future maintenance. These changes, consolidated in a single tracked commit, aimed to clarify intent for contributors and streamline onboarding. By addressing documentation gaps and ensuring consistency in code comments, Masahiro reinforced code hygiene and traceability. The work demonstrated attention to detail in cross-language environments, though the scope was limited to non-functional, quality-focused improvements over one month.