The Union Arena Chained Soldier [UA49BT] Booster Box, releasing February 27, 2026, features characters from the Chained Soldier anime, with 16 packs per box and 8 cards per pack. This Japanese-language set includes new illustrations, voice cast foil-stamped autograph cards, and a serial-numbered Action Point (AP) card campaign.

Product Details & Content

·Set Code: UA49BT

·Contents: 16 packs per box (8 cards per pack).

·Rarity Structure: 81 types + 12 AP types (Common 30, Uncommon 28, Rare 12, Super Rare 11, AP 12).

·Special Cards: Includes serial-numbered AP cards (rare) and autographed cards from the voice cast.

·Theme: Features characters from the "Chained Soldier" (Mato Seihei no Slave) TV anime.