In a world fractured by fire, earth, water, and winged clans. Chiharureika, a shrine maiden, sets out on an adventure where she was born to serve as a threshold between life and the natural world. When the Winged Order begins a purge, Rure must confront the enslaved villages, trapped souls, and the tipping balance of a King who desired control over everything.

She is joined by Kagen, Neoru, and Aerael, together with her spirit, Koharu. Their journey through scarred lands, sacrifice, and memory. She learns the true weight of her role, facing their limits, and discovers Mother Spring. As the final battle erupts, Rure's powers are unleashed. With reconciliation and peace restored, they begin to live.