More cast members have been announced for the anime film adaptation of the Penguin Highway novel:
- Megumi Han is Hamamoto
- Rie Kugimiya is Uchida
- Miki Fukui is Suzuki
- Naoto Takenaka is Hamamoto’s Father
- Hidetoshi Nishijima is Aoyama’s Father
Hiroyasu Ishida is directing the film as his first feature-length directorial work. Yōjirō Arai is designing the characters for the film. Makoto Ueda wrote the script for this film. Umitarō Abe is composing the music.
Penguin Highway is scheduled to open in Japanese theaters on August 17, 2018.