| Seiyuu | Role |
| Chiwa Saitou | Hazuki |
| Hiroshi Kamiya | Kouhei Morioka |
| Takahiro Sakurai | Seiji Midou |
| Michiko Neya | Hiromi Anzai |
| Yumi Kakazu | Elfriede |
| Mugihito | Ryuuhei Midou |
| Yuri Amano | Hazuki's Mother (Episode 3, 8 - 10, 12, 23) |
| Takashi Matsuyama | Kinkel (Episode 3, 8 - 13) |
| Mai Kadowaki | Hikaru Midou (Episode 6, 7, 10, 11, 17 - 25) |
| Miyu Matsuki | Kaoru Midou (Episode 6, 7, 10, 11, 17 - 25) |
| Fumihiko Tachiki | Vigo (Episode 1, 2, 8) |
| Ken Narita | Mario (Episode 15 - 17) |
| Sawa Ishige | Alto (Episode 18 - 25) |
| Tadahisa Saizen | Vargas (Episode 18 - 24) |
| Naoki Yanagi | Jeda (Episode 18 - 24) |
| Juurouta Kosugi | Yayoi Midou (Episode 18 - 24) |
| Marina Inoue | Kouhei (as a child Episode 3 & 22) |
| Fumi Morisawa | Elfriede's Mother (Episode 17) |