Kaina returns to the icy Canopy, unsure of what he should do next. He and Liliha have brought peace to Atland and Valghia through an alliance. Now supplies run low, and the people need answers. Kaina, Liliha, and their small party set out to cross the snow in search of the great orbital spire tree. This is the first step to saving their people.

Source: Crunchyroll

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Prequel: Ooyuki Umi no Kaina