| Seiyuu | Role |
| Hideki Ogihara | Ryouta Aizawa |
| Yuki Masuda | Sayaka Nagase |
| Yoshino Nanjou | Aya Sugimoto |
| Takashi Nagasako | Gale Lantis |
| Norio Wakamoto | Shigemichi Morimoto |
| Takehito Koyasu | Kazuhiko Nitta |
| Kumi Sakuma | Nao Morisaki |
| Kentarou Itou | Shuuhei Aizawa |
| Nana Inoue | Ryouta (as a child Episode 4) |
| Yuu Kobayashi | Shuuhei (as a child Episode 4) |
| Hikaru Tokita | Shin (Episode 8) |