| Name | Character | Episodes |
|---|---|---|
| Takehito Koyasu | Adam (voice) | 12 |
| Yasunori Matsumoto | Joe (voice) | 12 |
| Kenta Miyake | Shadow (voice) | 12 |
| Hikaru Midorikawa | Cherry blossom (voice) | 12 |
| Kensho Ono | Tadashi Kikuchi (voice) | 10 |
| Tatsuki Kobe | Spectator (voice) | 2 |
| Saori Hayami | Emma (voice) | 1 |
| Saori Hayami | Girl (voice) | 1 |
| Yoshitsugu Matsuoka | Reki's Friend (voice) | 1 |
| Volcano Ota | Oliver (voice) | 1 |