One Piece Film: Diamond

One Piece Film: Diamond is the 16th One Piece movie, which will be planned to be screened in Japanese theatres in September 4, 2025.

Synopsis
The story of the movie is set on a mysterious group of islands known as "The Gemstone Islands", where a mysterious entity is being sealed inside. The Straw Hats, pirates, Marines and fans from across the world discovered something mysterious, they have no choice but to scramble throughout the waters and make on their way to the Brilliant Sea.

Plot
The Straw Hat Pirates visit the Brilliant Sea and attempt to make their way there, but an unknown villain wrecks the ships, resulting in a terrible disaster. Luffy glanced about and found the actual appearance of a mystery, which he dubbed "Gioiello," and he seeks around for a combat.

Voice cast
TBA

Production
TBA

Music
The film score is composed by Naoki Satō and Yasuharu Takanashi, and the theme song for the film is "Above the Dazzling Shores (Japanese: まぶしい海岸の上 Mabushii Kaigan no Ue)" performed by Rei (礼衣) and produced by TUYU.

Release
The film had its world premiere in Nippon Budokan, Tokyo on August 18, 2025, and was released theatrically on 495 screens in Japan on September 4, 2025, by its distributor Toei Company. It is available on MX4D, 4DX, Dolby Atmos, and IMAX.

Trivia

 * The film shares its CGI animation design with Dragon Ball Super: Super Hero.