During January 2025, Daiki Taniguchi enhanced the kaina404/PDFMathTranslate repository by focusing on internationalization and Japanese typography within the PDF converter. He addressed readability issues for Japanese content by updating the default line height through modifications to the LANG_LINEHEIGHT_MAP, ensuring more consistent and accessible text rendering in generated PDFs. Working primarily in Python, Daiki maintained clear documentation and commit traceability, facilitating future adjustments and ongoing maintainability. Although the work was concentrated on a single feature, it demonstrated a targeted and thoughtful approach to solving a specific user experience problem, resulting in a concise yet high-impact improvement to the PDF generation pipeline.