Utsunomiya Brex enters the 2025–26 EASL season as Japan’s flagship representative, having secured the 2024–25 B.LEAGUE championship—its third title, making it the most successful franchise in league history. The Brex dazzled with a dominant 48–12 regular-season record and a thrilling 2–1 Finals victory over Ryukyu. Their participation reinforces EASL’s commitment to showcasing top-tier, championship-caliber clubs across East Asia. The 2025-26 season marks Utsunomiya's first appearance in EASL's home-and-away format, having participated in Champions Week 2023 and Terrific 12 2019.