The Japanese FB04 Booster Box, also known as the "Ultra Limit" set for Dragon Ball Super Fusion World, is a booster box containing 24 packs, with each pack holding 6 cards. This set features new leaders, a total of 143 cards including 22 parallel cards, and characters from Dragon Ball GT and Dragon Ball Dmer, such as Ultra Instinct Goku, Majin Buu, and Super Baby. 
Set contents and features
Configuration: Each box contains 24 booster packs, and each pack contains 6 cards.
New content: The set introduces 5 new leader cards and a total of 143 unique cards. It also includes 22 parallel cards with different illustrations and 3 "Premium Reprint Cards" from previous sets (up to FB03) with new thematic illustrations.
Characters: Notable characters from Dragon Ball GT and Dragon Ball Dmer appear in this set, including Ultra Instinct Goku, Buu, Baby, and Golden Great Ape Goku.
Rarities: The set includes various rarities, such as Super Rares (SRs), Secret Rares (SCRs), and cards with alternate art (Alt-Art) and gold foiling. 
Collectible aspects
Parallel cards: There are 22 parallel cards, some of which feature unique illustrations.
Chase cards: The set includes "chase cards," with a higher rarity, such as the Secret Rare double-star parallel rare.
Alternate art: Many cards come with alternate art, making the set desirable for collectors. 
Target audience
Players: Suitable for players aged 6 and up, who want to expand their collection with new and powerful cards.
Collectors: A good choice for collectors who want to acquire rare and valuable cards to add to their collection.