It has become a common practice over the years for big anime franchises to release films that aren't always canon to the overall storyline. Eiichira Oda's One Piece has seen a lot of films since its debut more than 25 years ago — 15 films, to be precise, with the most recent, One Piece Film: Red, releasing mid-summer 2022. There's often debate among fans about which One Piece movies are canon, or at least contain elements that fit into the overall canon, and Red is just as ambiguous as all the other One Piece movies. Some say it isn't canon at all, while others believe there are at least some bits and pieces that fit nicely into the canon.
Source：https://www.cbr.com/is-one-piece-red-canon/
