If you loved Kaizoku Sentai Gokaiger: The Movie - The Flying Ghost Ship, try Avataro Sentai Donbrothers vs. Zenkaiger
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.

Kaizoku Sentai Gokaiger: The Movie - The Flying Ghost Ship
Avataro Sentai Donbrothers vs. Zenkaiger
What they share
Both films are directed by Katsuya Watanabe, and they both carry the playful, uplifting mood tags, and they sit in Action / Science Fiction territory. If that's the register that drew you to Kaizoku Sentai Gokaiger: The Movie - The Flying Ghost Ship, the second film will land in a comparable space — through a different lens.
What Avataro Sentai Donbrothers vs. Zenkaiger is
You're a Zenkaiger facing a Kashiwa Mochi World, where Zocks crowns himself king. But a year passes, and Taro's back, though his team wants him gone. An incident merges both worlds. Watanabe orchestrates a crossover, mashing mythos in a film that revels in Sentai tradition.