Full Cast

    500 Million Year Button (2022)

    Cast Members (8)

    MN

    Masako Nozawa

    as Tonio (voice)

    14 episodes

    SM

    Suzuko Mimori

    as Jaimi (voice)

    14 episodes

    NO

    Naomi Ohzora

    as Suneko (voice)

    14 episodes

    MK

    Marika Kouno

    as Dr. Inoue

    14 episodes

    HY

    Hina Yomiya

    as Hana-chan (voice)

    14 episodes

    SM

    Shiori Mikami

    as Unko-chan (voice)

    14 episodes

    VO

    Volcano Ota

    as Dragon (voice)

    14 episodes

    BG

    Banjo Ginga

    as Narrator (voice)

    14 episodes