In a post-war alternate timeline, Japan is divided into the North, controlled by the Union, and the South, controlled by the United States. Within the Union's borders, a mysterious tall tower rises. Three high school students promise to cross the border in a self-built plane and discover the tower's secret.
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In a post-war alternate timeline, Japan is divided into the North, controlled by the Union, and the South, controlled by the United States. Within the Union's borders, a mysterious tall tower rises. Three high school students promise to cross the border in a self-built plane and discover the tower's secret.
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