| Seiyuu | Role |
| Kenichi Suzumura | Kazuto Tokino |
| Hisayo Mochizuki | Valkyrie (Chibi version) |
| Rie Tanaka | Sanada-san |
| Saeko Chiba | Akina |
| Mayumi Iizuka | Raine |
| Chinami Nishimura | Hydra |
| Omi Minami | Rika Tokino |
| Megumi Ogata | Valkyrie (adult version) |
| Houko Kuwashima | Chorus |
| Haruko Momoi | Maru |
| Tadahisa Saizen | Shiro |
| Emi Shinohara | Mehm (Episode 6, 10 - 12) |
| Mai Nakahara | Mayumi (Episode 7 & 9) |