Shunkashuutou Daikousha: Haru no Mai

Winter was once the world's only season until spring, summer, and autumn came into being and the cycle of nature was entrusted to human Agents. That cycle breaks when Hinagiku Kayo, the Agent of Spring, is abducted and spring vanishes from the land for ten long years.

Hinagiku finally returns after years of suffering, reunited with her devoted guard Sakura Himedaka, who never stopped searching for her. Restoring spring means traveling across lands deprived of warmth, but the journey also forces them to confront the weight of the lost decade and the wounds the abduction left between them.