In June 2025, Kouga enhanced observability and frontend resilience across traPtitech/manifest and traPtitech/traQ_S-UI. He updated VictoriaMetrics monitoring configurations by adding two new endpoints, using YAML and DevOps practices to improve system visibility and enable faster issue detection. On the frontend, Kouga addressed an edge case in Vue.js by ensuring the UI displays a clear 'unknown stamp' label for deleted stamps, rather than omitting them, which improved user feedback and reduced ambiguity. His work demonstrated effective cross-repository collaboration, applying configuration management and frontend development skills to deliver targeted, maintainable improvements within a focused development period.