| Seiyuu | Role |
| Masami Kikuchi | Kazuki Sendou |
| Kouki Miyata | Tate Otoko (Slim Guy) |
| Takashi Nagasako | Yoko Otoko (Fat Guy) |
| Naoko Takano | Chinami Tomono |
| Mie Sonozaki | Aya Hasebe |
| Miho Yamada | Minami Makimura |
| Shizuka Ishikawa | Eimi Oba |
| Kaoru Morota | Yuu Inagawa |
| Kouichi Tohchika | Taishi Kuhonbotsu |
| Mamiko Noto | Rena Tsuchitani |
| Yumi Kikuchi | Miho (Episode 4, 7, 10) |
| Satomi Koorogi | Momo (Comic Party Revolution OVA) |
| Masayo Kurata | Subaru (Comic Party Revolution OVA) |
| Satomi Koorogi | Asahi |
| Asako Dodo | Yuuka Tsukishiro (Episode 4, 7, 10) |
| Mie Sonozaki | Mayu (Episode 4 & 10) |
| Kumi Sakuma | Kazuki's Mother |
| Chieko Higuchi | Shiho Nagaoka (Episode 1) |
| Ayako Kawasumi | Akari Kamigishi (Episode 1) |
| Yui Horie | Multi (Episode 1 & 2) |
| Souichirou Hoshi | Masashi (Episode 1) |