The "Exclusive" part of the product code CUSA06381 refers to the fact that this version of the game might include exclusive content, such as:
: Unlike its predecessors, Storm 4 introduced "Leader Swap," allowing you to switch between three characters mid-combo, creating hyper-fast, strategic team battles. Why "CUSA06381" Matters cusa06381naruto+shippuden+ultimate+ninja+storm+exclusive
: This edition typically bundles previous DLC packs, such as Shikamaru’s Tale and Gaara’s Tale extra scenarios. Key Gameplay Features The "Exclusive" part of the product code CUSA06381