| Name | Character | Episodes |
|---|---|---|
| Mikako Ichikawa | Atsusa Kano | 11 |
| Masahiko Nishimura | Yao | 11 |
| Yutaka Takenouchi | Kyosuke Kai | 11 |
| Michiko Hada | Minako Mori | 11 |
| Yuya Endo | Kyosuke (15 years old) | 2 |
| Shigeru Kōyama | 2 | |
| Ko Shibasaki | Asai | 1 |
| Ryunosuke Kamiki | 1 | |
| Youki Kudoh | Nami Okino | 1 |
| Anne Suzuki | Izumi | 1 |
| Koyuki | Reiko | 1 |
| Machiko Washio | 1 | |
| Nene Otsuka | Haruka Sugita | 1 |
| Mirai Moriyama | 1 | |
| Jun Kunimura | 1 | |
| Kaho Minami | 1 | |
| Ryo Ishibashi | Kohei Kitamura | 1 |
| Takashi Naito | 1 | |
| Takeshi Ōbayashi | 1 |