The movie will adapt the first volume following an eight-year-old boy Keiji getting a mysterious snack that can make him fish taiyaki (Japanese fish-shaped cake).
(Source: MAL News)
| Beniko main | Nobue Iketani Japanese | 
| Fuyuko main | Tamaki Shiratori Japanese | 
| Keiji main | Toshiki Kumagai Japanese | 
| Otousan supporting | Ikkei Watanabe Japanese | 
| Sumimaru supporting | Fukujurou Katayama Japanese |