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8.1 2 Seasons • 99 Episodes

Space Brothers

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.

Seasons

Top Cast

  • Hiroaki Hirata

    Hiroaki Hirata

    Mutta Nanba (voice)

  • KENN

    KENN

    Hibito Nanba (voice)

  • Masayuki Katou

    Masayuki Katou

    Kenji Makabe (voice)

  • Miyuki Sawashiro

    Miyuki Sawashiro

    Serika Itou / Mutta Nanba as a Boy (voice)

  • Masako Ikeda

    Masako Ikeda

    Sharon Kaneko (voice)

  • Yuko Sanpei

    Yuko Sanpei

    Hibito Nanba as a Boy (voice)

  • Shô Ryûzanji

    Shô Ryûzanji

    Tadashi Hoshika (voice)

  • Ryou Naitou

    Ryou Naitou

    Yasushi Furuya (voice)

  • Shintaro Asanuma

    Shintaro Asanuma

    Yamato Mizoguchi (voice)

Overview

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.

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