S1·E2 – 500 Million Year Button

Masako Nozawa

Tonio (voice)

Suzuko Mimori

Jaimi (voice)

Naomi Ohzora

Suneko (voice)

Marika Kouno

Dr. Inoue

Hina Youmiya

Hana-chan (voice)

Shiori Mikami

Unko-chan (voice)

Volcano Ota

Dragon (voice)

Banjo Ginga

Narrator (voice)