OP09 - The Four Emperorshis product is a sealed Japanese OP 09 One Piece card booster box featuring "The Four Emperors" set. Specifically designed for One Piece Collectible Card Game (CCG) enthusiasts, this box contains booster packs with cards in Japanese language. With a focus on the popular series and characters from One Piece, this product offers collectors the chance to add unique and exciting cards to their collection, making it a must have for fans of the game.