| Seiyuu | Role |
| Kenji Hamada | George Koizumi |
| Marika Matsumoto | Miwako |
| Chiharu Suzuka | Isabella |
| Yoko Soumi | Kozue Shimamoto (Episode 7 - 11) |
| Akiko Kawase | Hamada-sensei (Episode 1, 4, 7, 9 - 12) |
| Yoshino Takamori | Yukino Koizumi (4, 8, 9, 11, 12) |
| Shouko Tsuda | Yukari's Mother (Episode 4 , 5, 8, 9, 11, 12) |
| Rumi Shishido | Mikako Kouda (4 - 7, 9, 11) |
| Makoto Tsumura | Yukari's Brother (Episode 2, 4, 8, 11, 12) |
| Shinichirou Miki | Seiji Kisaragi (Episode 1, 6, 11, 12) |
| Kenichi Ogata | Sebastian (Episode 10) |
| Rie Kugimiya | Isabella (as a child Episode 10) |
| Rika Matsumoto | George (as a child Episode 10) |
| Kappei Yamaguchi | Tsutomu Yamaguchi (Episode 6) |
| Urara Takano | Risa Nagase (Episode 6 & 12) |
| Rumi Shishido | Alice Yamaguchi |
| Megumi Toyoguchi | Tanabe (Episode 6) |
| Akeno Watanabe | Higasa (Episode 6) |