Aoi Koga, the voice of Kaguya in Kaguya-sama wa kokurasetai ~ Tensai tachi no ren'ai zunô sen ~ (2019), appears in the film as a theatre employee.
In the "Kaguya-sama: Love Is War" manga, Miko Ino says her ideal man was "someone like Shô Hirano". Hirano plays Shirogane in this film.
To celebrate both this Movie & it's Sequel, series Creator Aka Akasaka drew Renditions of the Films Posters in the Manga's Style & Often found ways to unapologetically Remind readers of the Films Release Dates through the Manga's Dialogue.
In the Manga, the Chapters that released the same Week the Live Action Films Released featured Not-So Sublet jokes and storyline based around the Films, including name dropping Actors and the Narrator even reminding Readers to check out the Films.