| Seiyuu | Role |
| Ayako Kawasumi | Megumi Noda |
| Tomokazu Seki | Shinichi Chiaki |
| Shinji Kawada | Ryuutarou Mine |
| Yoshinori Fujita | Masumi Okuyama |
| Hitomi Nabatame | Saiko Tagaya |
| Sanae Kobayashi | Kiyora Miki |
| Masaya Matsukaze | Yasunori Kuroki (Episode 15 - 19, 23) |
| Junichi Suwabe | Tooru Kikuchi (Episode 15 - 17, 19, 23) |
| Mamiko Noto | Sakura Saku |
| Kazuya Nakai | Kouzou Etou |
| Kumiko Higa | Makiko Tanaka |
| Saeko Chiba | Reina Ishikawa |
| Mitsuru Ogata | Hajime Tanioka |
| Ryouko Ono | Kaoru Suzuki |
| Tatsuhisa Suzuki | Youhei Hashimoto |
| Ayumi Fujimura | Yuki Inoue (Episode 4, 6, 7, 10, 12, 13) |
| Miyuki Ichijou | Minako Momodaira (Episode 8, 10, 13, 17) |
| Hiroshi Kamiya | Tomohito Kimura (Episode 9, 15 - 19) |
| Misaki Sekiyama | Maiko Aizawa (Episode 9, 15, 17, 18, 20) |
| Takako Honda | Keeko Kawano (Episode 9 - 12, 17, 18) |
| Keiji Fujiwara | Manabu Sakuma |
| Kotono Mitsuishi | Seiko Miyoshi (Episode 18, 19, 21, 22) |
| Akiko Hiramatsu | Kaori Etou (Episode 19 - 13) |
| Akira Ishida | Noriyuki Takahashi (Episode 20, 21, 23) |
| Kiyotaka Furushima | Keiji Tamaki (Episode 4 - 8, 10, 12, 13) |
| Masashi Ebara | Sebastiano Vieira (Episode 1, 4, 18) |
| Miyuki Sawashiro | Shinichi (as a child Episode 1 & 19) |
| Yuichi Nagashima | Ryuutarou's Father (Episode 2, 8, 12, 17) |
| Ryoka Yuzuki | Moe Suzuki (Episode 4, 5, 23) |
| Fuyuka Ooura | Mika (Episode 4 - 6, 8, 10) |
| Youko Honda | Miho (Episode 4 - 6) |
| Yuuichi Nakamura | Kazushi Iwai (Episode 4 - 7, 10) |
| Juurouta Kosugi | Hidemi Saku (Episode 6) |
| Tomoko Kawakami | Elise (Episode 8 & 9) |
| Hiroki Yasumoto | Oliver (Episode 8) |
| Ayumi Fujimura | Young Minako (Episode 8) |
| Haruka Kudou | Gorota (Episode 7) |
| Tomoko Kawakami | Prilin (Episode 7 & 21) |
| Rie Kugimiya | Liona (Episode 7 & 21) |
| Takanori Ooyama | Michael (Episode 7 & 21) |
| Shouko Tsuda | Nina Lutz (Episode 9) |
| Nobuhiko Okamoto | Kanai (Episode 5, 6, 8) |
| Takayuki Kondou | Mamoru Ookouchi (Episode 7, 10, 13) |
| Satomi Arai | Saya Suganuma (Episode 11 - 13) |
| Houchu Ohtsuka | Takahiko Miyoshi (Episode 14 & 15) |
| Hiroyuki Yoshino | Toshihiko Miyoshi (Episode 14, 15, 19) |
| Fumiko Orikasa | Yuiko Miyoshi (Episode 14, 15, 19) |
| Fuyuka Ooura | Yukko (Episode 17 & 18) |
| Ryouko Ono | Izumi (Episode 17 & 18) |
| Motomu Kiyokawa | Charles Auclair (Episode 20 - 22) |
| Kouki Miyata | Yuuto Segawa (Episode 21 & 22) |
| Fuyuka Ooura | Yuuto's Mother (Episode 21 & 22) |
| Hiroki Touchi | Yukihisa Matsuda (Episode 22) |
| Toru Ohkawa | Tatsuo Noda (Episode 22 & 23) |
| Atsuko Yuya | Youko Noda (Episode 22 & 23) |