Two novels were written by the film's scriptwriter Hirotaka Adachi. The first is a novelization that expands on the film's story which was released on October 29, 2021. The second is an original spin-off novel titled Ichinose Yuna ga Uiteiru (Yuna Ichinose Is Floating) which was released on November 26 of the same year.
In June 2020, animator and illustrator Loundraw revealed that he is producing a short theatrical anime film as part of the Project Common multimedia project. The film was unveiled in February 2021, with the project serving as Loundraw's directorial debut.
A manga adaptation by Yoshi Inomi was serialized in Shueisha's Tonari no Young Jump website from October 8, 2021, to June 3, 2022. The chapters were compiled into two tankobon volumes, released on November 19, 2021, and June 17, 2022.