If you loved The Little Prince and the Eight-Headed Dragon, try Thumbelina
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.
What they share
Both films are directed by Yugo Serikawa, and they both carry the playful mood tag, and they sit in Animation / Family / Fantasy territory. If that's the register that drew you to The Little Prince and the Eight-Headed Dragon, the second film will land in a comparable space — through a different lens.
playful
What Thumbelina is
Here's a film that perhaps took itself a little too seriously. A thumb-sized girl is born, kidnapped by amphibians, and then escapes to find a more suitable partner. It's a journey that somehow manages to avoid any actual frogs turning into princes.
