The Cat's Eye sisters, who were created by "City Hunter" writer Tsukasa Hôjô and who got their own series in Cat's Eye (1983), make a special appearance in the film.
Usually Kaori hits Ryo with a hammer reading "100t" (100 tons) on its side, but the first time she does this the hammer reads "2019t", for the film's release year of 2019.
Keiko Toda, who voiced Hitomi Kisugi in Cat's Eye (1983), takes over as the voice of Hitomi's sister Rui, as Rui's original voice actor Toshiko Fujita had passed away in 2018.
There is a dedication to Fujita in the film's closing credits.
There is a dedication to Fujita in the film's closing credits.
Ryo's quote "This town needs a man like me" originated from One Cool Sweeper! XYZ Is a Dangerous Cocktail (1987).
On the very last scene, the left side of the blackboard has an illustration of Lupin the 3rd, another famous anime/manga character.