| Seiyuu | Role |
| Yumi Kakazu | Aya Mikage |
| Junko Iwao | Ceres |
| Susumu Chiba | Aki Mikage |
| Katsuyuki Konishi | Tooya |
| Kentarou Itou | Yuuhi Aogiri |
| Mayumi Asano | Suzumi Aogiri |
| Tomokazu Seki | Alexander O. Howell |
| Tomokazu Sugita | Kagami Mikage |
| Kouichi Tohchika | Wei |
| Kujira | Oba Q |
| Ayako Kawasumi | Chidori Kuruma (Episode 10 - 14, 19, 22) |
| Kae Araki | Shouta Kuruma (Episode 10, 11, 19, 20) |
| Shinichirou Miki | Mikagi (Episode 21, 23, 24) |
| Rokuro Naya | Aya's Grandfather (Episode 1, 2, 4, 13) |
| Akiko Yajima | Miori Sahara (Episode 15 & 16) |
| Akimitsu Takase | Tomonori Aogiri (Episode 8, 9, 15, 19, 20, 24) |
| Yuko Nagashima | Gladys (Episode 2, 3, 7, 17 - 19, 21) |
| Kazusa Murai | Kumi Akiyama (Episode 11) |
| Shigeru Shibuya | Kazuma Aogiri (Episode 8 & 9) |
| Akiko Kimura | Yuki Urakawa (Episode 7 & 8) |
| Emi Shinohara | Miori's Mother (Episode 16) |
| Wataru Takagi | Hayama (Episode 7) |
| Unsho Ishizuka | Kurozuka (Episode 17, 18, 20) |
| Mitsuru Ogata | Yuuhi's Father (Episode 2, 8, 9, 24) |
| Akimitsu Takase | Chidori's Grandfather (Episode 10) |
| Kunihiko Yasui | Aya's Father (Episode 1, 2, 4, 9, 18) |
| Daisuke Hirakawa | Hirokazu Yoshizuka (Episode 11) |
| Yurika Hino | Aya's Mother (Episode 1 - 4) |