In a post-war alternative timeline, Japan is divided into the North, controlled by the Union, and the South, controlled by the United States. A mysterious high tower rises within the borders of the Union. Three high school students promise to cross the border with a self-built airplane and unravel the secret of the tower.
as Hiroki Fujisawa (voice)
as Takuya Shirakawa (voice)
as Sayuri Sawatari (voice)
as Okabe (voice)
as Tomizawa (voice)
as Maki Kasahara (voice)
as Arisaka (voice)
as Emishi Seisakujo Koin / Eki Shanai Announce / Byoin Incho (voice)
as Emishi Seisakujo Koin / TV News (voice)
as Emishi Seisakujo Koin / Daigakuinsei (voice)
as Daigakuinsei / Radio Hoso (voice)
as Joshi Seito (voice)
as Hiroki's Girlfriend (voice)
