A girl becomes a mountain's god without choosing it. Her brother spends years looking for her in the wrong place. Ginko watches them orbit each other across a divide that can't be crossed, not because it's impossible, but because she's already transformed into something that needs to stay still. The show builds its entire weight from the distance between what you want and what you've already become. Animation dissolves into landscape until you forget you're watching screens. By the end, you understand that some people don't get rescued, they get witnessed.
Ginko's wandering path leads him deep into a mist-shrouded mountain, where he discovers something impossible: a girl whose body has become one with the forest itself, branches and leaves sprouting from her skin like roots finding soil. She is Kaya, the mountain's lord, chosen by forces beyond human understanding to maintain the balance between the natural and supernatural worlds. Yet something doesn't add up. How does a human child come to hold such power? The mystery deepens when Kaya's brother appears, driven by years of desperate searching. He remembers the day she vanished during a storm, stolen away by something neither of them could fight. Now he stands before her transformed, caught between joy and horror at what his sister has become. Kaya faces an impossible choice: honor her role as guardian of the mountain and its strange inhabitants, or reclaim the humanity and family bonds she's slowly forgetting. Ginko watches as she wrestles with duty and longing, caught between two worlds that refuse to coexist.