Seigaku's Secret Plan

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)