Space Brothers
A warm, earnest 99-episode journey about two brothers pursuing a shared childhood dream, balancing setback and encouragement across a sustained narrative of personal growth.
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.
Essence
Ensemble
Hiroaki Hirata
Mutta Nanba (voice)
KENN
Hibito Nanba (voice)
Masayuki Katou
Kenji Makabe (voice)
Miyuki Sawashiro
Serika Itou / Mutta Nanba as a Boy (voice)
Masako Ikeda
Sharon Kaneko (voice)
Yuko Sanpei
Hibito Nanba as a Boy (voice)
Shô Ryûzanji
Tadashi Hoshika (voice)
Ryou Naitou
Yasushi Furuya (voice)
Shintaro Asanuma
Yamato Mizoguchi (voice)
Takanori Hoshino
Reiji Nitta (voice)
Like Space Brothers
Nearest across the full emotional profile.
Same Mood as Space Brothers
Nearest on what's most distinctive about this one.
Like Space Brothers, But Darker
Similar, pushed toward heavier and more intense.
Like Space Brothers, But Lighter
Similar, pushed toward warmer and easier.
Like Space Brothers, But Less Popular
Same territory, far fewer people have seen it.
