If you loved Totto-chan: The Little Girl at the Window, try Doraemon: Nobita's Chronicle of the Moon Exploration
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.
You already loved

Totto-chan: The Little Girl at the Window
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Doraemon: Nobita's Chronicle of the Moon Exploration
What they share
Both films are directed by Shinnosuke Yakuwa, and they both carry the cozy, foreign gem mood tags, and they sit in Animation / Family territory. If that's the register that drew you to Totto-chan: The Little Girl at the Window, the second film will land in a comparable space — through a different lens.
cozyforeign gem
What Doraemon: Nobita's Chronicle of the Moon Exploration is
Here's a film that asks the question: what if children were right? Nobita uses Doraemon's gadget to create a rabbit kingdom on the far side of the moon, only to discover it's already inhabited by invaders. The movie delivers exactly what you'd expect.