When an advid stargazer Kai Tachibana discovers a mysterious artifact in his grandfather’s attic, he’s transported to a breathtaking parallel world where the sky is lit by a shimmering aurora. There, he meets Liora, a spirited girl from a culture deeply connected to nature and the stars. Despite their differences, the two form an unlikely bond, sharing their worlds and dreams. But their connection comes at a cost—the artifact, known as the Horizon Shard, is tied to an ancient curse that threatens both their worlds. As Kai and Liora navigate cultural clashes, emotional challenges, and the growing feelings between them, they must find a way to break the curse before it’s too late. .