Natsumi Murakami

Chiyo (voice)

Ayane Sakura

Sekine (voice)

Megumi Han

Tsubasa (Tsuyoshi) (voice)

Yu Serizawa

Tsubasa (Older Sister) (voice)

Yuya Hirose

Hanzо̄ (voice)

Yoji Ueda

Brian-sensei (voice)

Tomoko Kaneda

Maskuma (voice)

Hochu Otsuka

Narration (voice)

Daisuke Ono

Head of the Research Institute (voice)