During December 2025, Littleqiu contributed to the UNIkeEN/SJMCL repository by developing and integrating LittleSkin as a preset authentication server, expanding the existing authentication provider catalog. Working primarily in Rust, Littleqiu focused on backend development and API extensibility, ensuring the new provider fit seamlessly into the established authentication flow and interface. This addition simplified onboarding for new clients and enabled faster integration for downstream services, supporting scalable identity management. The work demonstrated disciplined version-control practices and a pull request-driven workflow, with all changes aligned to project architecture. No major bugs were addressed during this period, reflecting a focused feature delivery.