The Place Promised in Our Early Days

In an alternate reality set in post-war Japan, the nation stands divided between the Union-controlled North and the United States-governed South. Amidst this political landscape rises an enigmatic tower within the confines of the Union's territory. This intriguing structure ignites curiosity in three young students attending high school on opposite sides of the border. With an unwavering resolve, they embark on a daring mission to construct their own aircraft and infiltrate the Union's domain, driven by their shared goal to uncover the elusive truth surrounding the tower's origins. Their audacious journey weaves themes of friendship, courage, and determination as they confront the complex realities of their divided nation while racing against time to solve the enigma hidden within the imposing structure.