| Seiyuu | Role |
| Momoko Saitou | Choko |
| Daisuke Hirakawa | Haruma Kawagoe |
| Rie Kugimiya | Yurika Hanayamada (Episode 13 - 24) |
| Yuki Matsuoka | Tamami Marumo |
| Yumiko Kobayashi | Kakeru Ishida |
| Sayaka Ohara | Ayano Sonozaki |
| Rika Morinaga | Makoto Ashirai |
| Kaori Mizuhashi | Chitose Serikawa |
| Kanako Tateno | Masumi (Episode 22 - 24) |
| Mari Kanou | Aki (Episode 14, 17, 22, 23) |
| Yukiji | Takeshi (Episode 14, 17, 22) |
| Chiwa Saitou | Eriko Odawara (Episode 14, 15, 18, 19, 22 - 24) |
| Ken Narita | Kazuya Sawamori (Episode 7 - 9, 11, 24) |
| Kana Ueda | Hideko Hasuki (Episode 13 - 17, 22, 24) |
| Rio Natsuki | Santa (Episode 1, 2, 24) |
| Eri Sendai | Haruma (as a child Episode 1, 22, 23) |
| Misaki Sekiyama | Takeshi's Mother (Episode 14) |
| Fumie Mizusawa | Yuki's Mother (Episode 21) |
| Eri Nakao | Akiho (Episode 22) |
| Junko Noda | Shouko Ishida (Episode 23 & 24) |
| Ryo Hirohashi | Yuuko Ishida (Episode 23 & 24) |