If you loved Professor Layton and the Eternal Diva, try Crayon Shin-chan: Honeymoon Hurricane ~The Lost Hiroshi~
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.

Professor Layton and the Eternal Diva

Crayon Shin-chan: Honeymoon Hurricane ~The Lost Hiroshi~
What they share
Both films are directed by Masakazu Hashimoto, and they both carry the playful mood tag, and they sit in Animation / Family territory. If that's the register that drew you to Professor Layton and the Eternal Diva, the second film will land in a comparable space — through a different lens.
What Crayon Shin-chan: Honeymoon Hurricane ~The Lost Hiroshi~ is
Animation’s answer to dad-nap capers tests whether the Nohara clan can locate Hiroshi before the treasure does. A holiday abroad turns into a globe-trotting chase when Hiroshi gets lifted by a masked man seeking fabled loot. All the dad-joke energy can’t disguise the plot’s borrowed-from-everywhere DNA.