| Name | Character | Episodes |
|---|---|---|
| Yumiri Hanamori | Ryuji Ayukawa (voice) | 12 |
| Shinichiro Kamio | Koigakubo (voice) | 12 |
| Aoi Koga | Yamamoto (voice) | 12 |
| Kengo Kawanishi | Haruka Hashida (voice) | 12 |
| Atsumi Tanezaki | Fumi Kamiyama (voice) | 3 |
| Sayaka Ohara | Yuki Kuwana (voice) | 2 |
| Chika Sakamoto | Ryuji's Grandmother (voice) | 2 |
| Kana Hanazawa | Kinemi Miki (voice) | 1 |
| Ryota Suzuki | Sasaki (voice) | 1 |