When they were young, the brothers Mutta and Hibito promised each other they would become astronauts. Now, in 2025, Hibito has followed his dream to become the first Japanese on the moon, but Mutta has just been fired from his job. His brother reminds him of their childhood promise, and Mutta decides once again to aim for space.
Space Brothers explores themes of space, based on manga, astronaut. A blend of Animation and Drama, all seasons are available to stream for free on Ernax — no account required.
Genre: Animation, Drama, Sci-Fi & Fantasy
Seasons: 2 · 99 episodes
Status: Ended
Network: Nippon TV, YTV
Cast: Hiroaki Hirata, KENN, Masayuki Katou, Miyuki Sawashiro, Masako Ikeda, Yuko Sanpei, Shô Ryûzanji, Ryou Naitou, Shintaro Asanuma, Takanori Hoshino
Rating: 8.1/10 (24 votes)
Themes: space, based on manga, astronaut, inspiring story, personal growth, anime, brothers, dream pursuit
Stream all seasons of Space Brothers online free in HD on Ernax. No subscription or sign-up required. Watch Space Brothers free without Netflix, Amazon Prime, or any paid service.