Final Day of Summer

Final Day of Summer is a Japanese animated romantic comedy-drama film produced by AnimeCore and Studio Acesky with animation from Studio Acesky, based off the short film of the same name produced by Studio Acesky. It is the feature film debut of Studio Acesky producer Kirishima Zeshin.

Pre-production
Development of the film began in 2020 where Studio Acesky approached Masaki Nissho to adapt their story as a feature film, of which she approved and started working on a story outline. Higuchi Anbi, the director of the short film, was chosen as the director of the film.

Kadokawa also entered a theatrical distribution deal with AnimeCore (then SurgeAnime) at the time, and so they were chosen as the domestic theatrical distributor.

Production
Production of the film took place at Studio Acesky's primary movie animation studio, with three other Acesky studios acting as support studios.