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.
吉岡秀隆
as Hiroki Fujisawa (voice)
萩原聖人
as Takuya Shirakawa (voice)
南里侑香
as Sayuri Sawatari (voice)
石塚運昇
as Okabe (voice)
井上和彦
as Tomizawa (voice)
水野理紗
as Maki Kasahara (voice)
木内秀信
as Arisaka (voice)
岩崎征実
as Emishi Seisakujo Koin / Eki Shanai Announce / Byoin Incho (voice)
竹本英史
as Emishi Seisakujo Koin / TV News (voice)
平野貴裕
as Emishi Seisakujo Koin / Daigakuinsei (voice)
前田剛
as Daigakuinsei / Radio Hoso (voice)
中尾友紀
as Joshi Seito (voice)
