The film's production was announced on December 25, 2021, through the official series' Twitter.[5] The date corresponds to the date of the series finale within the series itself.[6] On the initial release, promotional material depicted the series' protagonist Odokawa in an interrogation room,[6] prompting speculation regarding the film's plot.[3] The film's trailer featured a blend of previous footage from the series and brand-new footage.[5] The film is set to release on April 1, 2022, in Japan,[7] with an unknown international release date.[5] It was additionally revealed that the cast from the 2021 series would be reprising their roles for the film.[5] Director Baku Kinoshita and writer Kazuya Konomoto additionally would head the production of the film.[2] Crunchyroll subsequently announced that it received distribution rights in North America,[8][7] while Asmik Ace received Japanese distribution rights.[1]