Space Brothers: Number Zero (2014)
The animated prequel that reveals the childhood dream binding two brothers to the stars — and the night everything began.
Space Brothers: Number Zero - Movie Information
- Original Title: 宇宙兄弟＃0
- Release Year: 2014
- Directed by: Ayumu Watanabe
- Type: Movie
- Genres: Animation, Drama, Sci-Fi
- Runtime: 1h 35m
- Original Language: Japanese
- Spoken Languages: Japanese
- Release Date (Theatrical): August 9, 2014 (Australia - PG), May 14, 2015 (South Korea - ALL)
- Alternative Titles: Uchuu Kyoudai: Number Zero (JP), Space Brothers # 0 (US)
- Production Companies: A-1 Pictures
- Production Countries: Japan
Space Brothers: Number Zero - Plot
Prequel to the TV anime series, revolving around the "origin of the dream."
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Space Brothers: Number Zero - Cast & Crew
Director(s)
- Ayumu Watanabe
Main Cast
- Hiroaki Hirata
- KENN
- Akio Otsuka
- Kinryu Arimoto
- Fumihiko Tachiki
- Kazuki Iio
- Mayumi Tanaka
- Miyuki Sawashiro
- Yuko Sanpei
- Daishiro Hano
Writers
- Chuya Koyama
Space Brothers: Number Zero - FAQs
What is Space Brothers: Number Zero about?
Space Brothers: Number Zero is a prequel to the beloved Space Brothers anime series. It travels back to the childhood of brothers Mutta and Hibito Nanba, uncovering the pivotal moment that first sparked their shared dream of reaching the stars. It's a heartfelt origin story about ambition, family, and the courage to dream big.
Do I need to watch the anime series first?
While Space Brothers: Number Zero works as a standalone origin story, fans of the TV anime series will get the most out of it. Newcomers can still enjoy it as an introduction to the brothers and their world, but prior familiarity with the characters makes the emotional payoff considerably richer.
Where can I watch Space Brothers: Number Zero?
You can find current streaming and viewing options for Space Brothers: Number Zero on JustWatch, which lists all available platforms in your region. Availability may vary depending on your country, so checking JustWatch is the easiest way to find where it's streaming or available to rent or buy.
What is the origin story shown in this film?
The film dives into the childhood of Mutta and Hibito Nanba, centering on the night they witnessed a UFO together and made a promise to go to space. It also explores the influence of astronaut Brian Jay and his family, whose story quietly shaped the brothers' dreams in ways they wouldn't fully understand until much later.
Who directed Space Brothers: Number Zero?
Ayumu Watanabe directed the film. He also helmed the original Space Brothers TV anime series, bringing the same thoughtful, character-driven approach to this prequel. His direction keeps the tone warm and grounded, perfectly matching the spirit of Chuya Koyama's source material.
Who are the main voice actors in this film?
The main cast features Hiroaki Hirata as adult Mutta Nanba and KENN as adult Hibito Nanba, reprising their roles from the TV series. Miyuki Sawashiro and Yuko Sanpei voice the brothers as children, while Akio Otsuka and Kinryu Arimoto bring depth to the pivotal Jay family characters.
Is Space Brothers: Number Zero based on a manga?
Yes, Space Brothers: Number Zero is rooted in Chuya Koyama's manga series Uchuu Kyoudai, which ran in Weekly Morning magazine from 2008. The film adapts prequel material from the manga, expanding on backstory elements that the TV anime series touched on only briefly, giving fans a deeper look at the brothers' origins.
What is the runtime of Space Brothers: Number Zero?
Space Brothers: Number Zero runs for 95 minutes — a compact, focused runtime that suits its intimate prequel story. It's short enough to watch in a single sitting, yet packs in enough emotional depth and character development to feel genuinely satisfying, especially for fans of the franchise.
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