| Seiyuu | Role |
| Toshiyuki Toyonaga | Ayumu Aizawa |
| Kanako Mitsuhashi | Miki Miyama |
| Akiko Kobayashi | Kisa Tanigawa (Episode 13 - 22, 24 - 26) |
| Masami Suzuki | Mika Miyama |
| Takahiro Sakurai | Shigeki Kobayakawa (Episode 14 - 22, 24 - 26) |
| Miwa Matsumoto | Akira Sukawara |
| Yuki Kaida | Masaki Makabe (Episode 14 - 22, 24 - 26) |
| Chiwa Saitou | Miku Miyama |
| Ai Shimizu | Shione Unno |
| Yasuyuki Kase | Takuma Kaburaki |
| Risa Mizuno | Asako Toudou |
| Tadahisa Saizen | Shirou Doumaru |
| Junko Takeuchi | Wakkun |
| Hozumi Gouda | Jirou Hatori (Episode 14, 19, 20, 22, 23, 26) |
| Misa Watanabe | Hana Tokimiya (Episode 14 - 19, 21 - 23, 26) |
| Katsuhisa Houki | Heigorou Suzuki |
| Kenji Hamada | Akiyuki Kishiro |
| Kaho Kouda | Shione's Mother (Episode 9) |
| Keiichi Sonobe | Sakakura's Father (Episode 2, 7, 9) |
| Noriko Namiki | Ayumu (as a child Episode 2, 5, 11) |
| Shigenori Souya | Rieko's Father (Episode 14, 15, 23) |