If you loved One Piece: Strong World Episode 0, try One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy
A bridge between a film you've already seen and one most people haven't. One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy has roughly 4.7× fewer votes than One Piece: Strong World Episode 0 — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

One Piece: Strong World Episode 0

One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy
What they share
Theyboth carry the cozy, playful mood tags, and they sit in Action / Animation / Comedy territory. If that's the register that drew you to One Piece: Strong World Episode 0, the second film will land in a comparable space — through a different lens.
What One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy is
Someone stole the local magistrate’s lunch and the secret police are on the case. Luffy and the Straw Hats wear Edo-era disguises while Buggy fences stolen dumplings and Vivi arrives looking for sanctuary. Nineteenth-century Japan has never felt this chronically understaffed before.