Ryo Saeba from "Cat's Eye" creator Tsukasa Hôjô's other manga "City Hunter", makes a cameo appearance at the start of the film.
This feature celebrates the 50th anniversary of Lupin the Third (1971) and the 40th anniversary of Cat's Eye (1983).
Lupin III wears a pink jacket in this feature, which he had worn in the 1980s in Lupin III: Part III (1984) and Lupin III: Legend of the Gold of Babylon (1985).
This is the second crossover for Lupin III after Lupin III vs. Detective Conan (2009), and for Cat's Eye after City Hunter: Shinjuku Private Eyes (2019).
The girl in the "Girl and the Flower" paintings resembles Clarisse from Lupin III: The Castle of Cagliostro (1979).