宇宙兄弟#0[ナンバー・ゼロ]

Space Brothers #0 is a prequel film to the Space Brothers anime series, released in Japan on August 9, 2014. The film was written by the manga's original creator, Chūya Koyama, and explores the backstories of the Nanba brothers before they became astronauts. It focuses on the Nanba brothers' interactions with the Jay brothers, who dreamed of landing on the moon before them, and reveals the true reasons behind the Nanba brothers’ pursuit of space. In the film, younger brother Hibito Nanba is selected as a backup crew member for a lunar landing rocket, while older brother Mutta Nanba is transferred to a rural area by his company. The movie delves into themes of brotherhood, perseverance, and the pursuit of dreams. Directed by Ayumu Watanabe and produced by A-1 Pictures, the film reunites many of the key animation staff. It offers fans a deeper understanding of the story's background, as well as providing new viewers with an entry point into the world of Space Brothers.