Viper?!

Mikako Takahashi

Sakuno Ryūzaki (voice)

Junko Minagawa

Ryōma Echizen (voice)

Hiroki Takahashi

Eiji Kikumaru (voice)

Naru Kawamoto

Takashi Kawamura (voice)

Yuki Kaida

Shūsuke Fuji (voice)

Takayuki Kondo

Shūichirō Ōishi (voice), Takaya Nomura (voice), Tatsunori Mori (voice)

Ryotaro Okiayu

Kunimitsu Tezuka (voice)

Shizuka Okohira

Sumire Ryūzaki (voice)

Akira Nakagawa

Kachirō Katō (voice), Karupin (voice)

Kenjiro Tsuda

Sadaharu Inui (voice)

Kohei Kiyasu

Karou Kaidō (voice)