Cast & crew
Koupen-chan (2025)
Cast
| Junji Majima | Stitch (Voice) |
| Kazuya Ichijo | Teach |
| Ayaka Saito | Yokoshima |
| Sachi Kokuryu | Penguin |
| Kazuya Ichijo | "Willing-to-teach type" Polar Bear-san (voice) |
| Ayaka Saito | Koupen-chan / Enaga Yokoshima-san (voice) |
| Sachi Kokuryu | Grown-up Penguin-san (voice) |
| Junji Majima | Adelie-san (voice) |
Crew
| Akiyuki Tateyama | Original Music Composer |
| Jun Kubota | Director of Photography |
| Yoshio Harisaki | Assistant Art Director |
| Masashi Yagi | Executive Producer |
| Rurutea | Original Story |
| Sachiko Nishi | Sound Effects |
| Hazumu Sakuta | Second Unit Director |
| Yoichi Kato | Series Composition |
| Yoshihiro Furusawa | Executive Producer |
| Kyou Yatate | Series Director |
| Daiki Hachimaki | Sound Director |
| Yoshio Harisaki | Assistant Art Director |
| Jun Kubota | Director of Photography |
| Akiyuki Tateyama | Original Music Composer |
| Hazumu Sakuta | Second Unit Director |
| Yoichi Kato | Series Composition |
| Rurutea | Original Story |
| Kyou Yatate | Series Director |
| Daiki Hachimaki | Sound Director |
| Masashi Yagi | Executive Producer |
| Yoshihiro Furusawa | Executive Producer |
| Sachiko Nishi | Sound Effects |
| Masataka Komine | Producer |