| Name | Character | Episodes |
|---|---|---|
| Kotaro Yoshida | Hisaya Morishige | 7 |
| Gaku Hamada | Director Ijuin | 7 |
| Yutaka Matsushige | Mr. Ou | 7 |
| Shido Nakamura | Kiyoshi Atsumi | 3 |
| Ryo Nishikido | Kyu Sakamoto | 3 |
| Kayoko Kishimoto | Sadako Sawamura | 2 |
| Tetsuya Takeda | Tatsuo Ooka | 2 |
| Nao Omori | Tadasu Iizawa | 1 |