Union Arena Chained Soldier [UA49BT] Booster Box (Japanese) 
 
Release Date February 27, 2026
 
Step into the intense world of Chained Soldier with the Union Arena Chained Soldier [UA49BT] Booster Box, Japanese Version. Featuring a powerful lineup of fan-favorite characters from the hit TV anime, this exciting UNION ARENA release lets players and collectors battle with their favorite heroines while chasing stunning foils, exclusive artwork, and highly sought-after serial numbered cards.
 
This set brings the action of Chained Soldier into UNION ARENA with a wide cast of unique characters, strategic gameplay potential, and collectible appeal that makes it a standout for anime fans and TCG enthusiasts alike. Whether you're building a competitive deck, collecting your favorite characters, or hunting premium chase cards, UA49BT offers strong value in every box.
 
Collectors will especially want to keep an eye out for foil-stamped autograph cards featuring the anime’s voice cast, including:
Kyouka Uzen – voiced by Akari Kitō
Himari Azuma – voiced by Yume Miyamoto
Shushu Suruga – voiced by Mari Hino
Neyo Ōkamura – voiced by Hina Tachibana
Tenka Izumo – voiced by Maaya Uchida
Yachiho Azuma – voiced by Nene Hieda
Sahara Wakasa – voiced by Reina Ueda
Aoba Wakura – voiced by Tomori Kusunoki
 
Adding even more appeal, this booster set includes many brand-new illustrations drawn especially for the product, showcasing:
Kyouka Uzen, Himari Azuma, Shushu Suruga, Neyo Ōkamura, Tenka Izumo, Yachiho Azuma, Sahara Wakasa, and Aoba Wakura
 
One of the biggest chase elements in this release is the Serial Numbered AP Card Campaign. At a very low pull rate, select booster packs may contain limited Action Point cards with serial numbers, making them some of the most desirable hits in the product. These Serial Numbered AP Cards are also planned to feature cast autographs, giving collectors a premium grail-tier chase.
 
Product Details:
Contents:
8 cards per pack
16 packs per box
 
Rarity Breakdown:
SR (Super Rare): 11 types
R (Rare): 12 types
U (Uncommon): 28 types
C (Common): 30 types
AP (Action Point): 12 types
 
Perfect for Union Arena players, Chained Soldier collectors, and anime TCG fans looking for a premium Japanese release, the Union Arena Chained Soldier [UA49BT] Booster Box is packed with beautiful artwork, fan-favorite characters, and major chase potential.