A spin-off manga by Harusono titled Hirano and Kagiura (平野と鍵浦, "Hirano to Kagiura") has been serialized in Media Factory's shōnen manga magazine Monthly Comic Gene since March 2019 and has been collected in four tankōbon volumes.

Sasaki and Miyano follows the story of two male high school students as their friendship gradually becomes romantic.

[43] The adaptation, later revealed to be a television series, is animated by Studio Deen and directed by Shinji Ishihira, with Yoshiko Nakamura handling series' composition, Maki Fujii designing the characters, and Kana Shibue composing the music.

It premiered in Japan on February 17, 2023, along with an anime short adaptation of the Hirano and Kagiura spin-off manga.

[55][56] Crunchyroll licensed the film, and screenings will be held at Sakura-Con and Anime Central before premiering online.