One Piece: Baron Omatsuri and the Secret Island

Secluded island. Midsummer bloom. Warped laughter. Luffy's pirate crew arrives seeking respite, only to find themselves ensnared in deadly games by the island's enigmatic ruler. Loyalty frays as shadows lengthen. A rare foray into psychological horror for the director.

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Mamoru Hosoda directed One Piece: Baron Omatsuri and the Secret Island in 2005. See Mamoru Hosoda's full filmography, where to start with Mamoru Hosoda, or where to go after you've seen everything by Mamoru Hosoda.

One Piece: Baron Omatsuri and the Secret Island was released in 2005 (JA original-language production), with a runtime of 91 minutes.