A failed experiment. This is the first full-CG Lupin film, hopefully it's a direction they won't further explore. This is not the first time people have experimented with the Lupin style, just recently Koike made an awesome trilogy that was pretty different from the usual Lupin fare, but at least that still had class.
While The First has managed to retain the quirky character animation, but the character models look off. They're terribly generic, and they lack any form of charisma. It's not that the film is disappointing on a technical level, but artistically it just lacks the spunk and flair that makes the Lupin franchise so much fun.
The story is also a little too epic, with micro black hole generation machines and a bunch of strange WWII lore. It's a bit too serious for the silly antics of Lupin and it feels tonally off compared to the rest of the film. It's not a total disaster though, but it's one of the worst Lupin films I've seen so far.