Gen Hoshino
Senpai (voice)
Kana Hanazawa
Girl with Black Hair (voice)
Aoi Yuki
Princess Daruma (voice)
Hiroshi Kamiya
School Festival Executive Head (voice)
Hiroyuki Yoshino
God of the Old Books Market (voice)
Junichi Suwabe
Nise-Jōgasaki (voice)
Kazuhiro Yamaji
Tōdō-san (voice)
Kazuya Nakai
Seitarō Higuchi (voice)
Nobuyuki Hiyama
Johnny (voice)
Ryûji Akiyama
Underpants Leader (voice)
Seiko Niizuma
Kiko-san (voice)
Yuko Kaida
Hanuki-san (voice)
Ami Koshimizu
Naoko-san (voice)
Soichi Nakaoka
Kôsaka (voice)
Kentarô Kokado
Ômu (voice)