Chiemi Tanaka
Rikka (voice)
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)