Alongside Harry Potter, one of the biggest book series of all time remains to be One Piece, the best-selling manga from Eiichiro Oda. The long-running anime adaptation is still going strong to this day, with over 1,100 episodes and counting. However, One Piece is about to break a nearly three-decade trend with a brand-new theatrical release that is set to compete against the likes of Demon Slayer and Spider-Man: Beyond the Spider-Verse.