The Union Arena SHY Booster Box (UA24BT) is a trading card game product featuring characters from the SHY anime, released on July 12, 2024. Each Japanese-language box contains 16 packs, with each pack holding 8 cards. The set includes original illustrations, a variety of rarities (Common, Uncommon, Rare, Super Rare, and Action Point cards), and foil-stamped autograph cards from the voice actors. 
Box and pack contents
Booster Box: Contains 16 packs.
Booster Pack: Contains 8 cards. 
Special features and contents
Original illustrations: The set includes original illustrations from the SHY TV anime.
Autograph cards: Some packs contain foil-stamped autograph cards from the voice actors.
Action Point (AP) cards: Limited AP cards with serial numbers are included.
Parallel card: Each product includes one parallel card.
Characters: Cards feature characters from the SHY series, including Iko Koishikawa, SPIRITS, LADY BLACK, Mianlong, Tzveta, and Kufufu. 
Card Rarity
Super Rare (SR): 10 types
Rare (R): 12 types
Uncommon (U): 28 types
Common (C): 30 types
Action Point (AP): 12 types