Yuhi contributed to both the rubocop/rubocop and Shopify/rails repositories during June 2025, focusing on code quality and maintainability. In rubocop/rubocop, Yuhi developed a configurable DefaultToNil option for the Style/FetchEnvVar cop, enabling developers to control how environment variables are autocorrected, which improved flexibility in Ruby codebases. For Shopify/rails, Yuhi addressed documentation accuracy by correcting a typo in a SQL example related to the with_recursive method, enhancing clarity for future users. Leveraging skills in Ruby, SQL, and code analysis, Yuhi’s work demonstrated attention to detail and a thoughtful approach to both feature development and documentation improvement.