Emi Shinohara

as Biko Daitokuji (voice)

Tessyo Genda

as Kei / D (voice)

Michie Tomizawa

as Shiiko Kotobuki (voice)

Miki Ito

as Eiko Magami (voice)

Akari Hibino

as Asa (voice)

Asami Mukaidono

as Miss Ayumi (voice)

Shuichi Ikeda

as Captain Napolipolita (voice)

Yoshino Takamori

as Ine (voice)

Daisuke Gori

as Mari (voice)

Megumi Hayashibara

as Ume (voice)