The Union Arena: Yu Yu Hakusho - Ghost Files Booster Box is a collectible card game product manufactured by Bandai in English language. This booster box contains cards from the Yu Yu Hakusho - Ghost Files set, released in 2025. Players can collect and trade these cards to enhance their decks and compete in the Union Arena game. Perfect for fans of Yu Yu Hakusho looking to expand their card collection with new and exciting additions.