I surprisingly enjoyed this one, despite the bad reviews saying otherwise. I haven't seen either franchise but after watching this, I might delve into both. The character interactions worked perfectly well, considering that this was a crossover, the CG animation surprisingly worked pretty well (and this is coming from someone who disliked Batman Ninja), and the performances were perfect. Not to mention the relationship between Lupin and AI was very touching and sibling-like. Only downside would be the villains but it was minor nitpick and the rest of the characters more than made up for it and the ending was a nice touch to the whole story, wrapping it up in a satisfying way that felt in character.
Review of Lupin the 3rd vs. Cat's Eye
