Union Arena Demon Slayer: Kimetsu no Yaiba represents a pivotal moment in the trading card game landscape, bringing the beloved anime franchise into the competitive TCG arena. Released in 2025, this set captured the global phenomenon of Demon Slayer during its peak cultural moment, introducing mechanics and artwork that resonated with both longtime collectors and newcomers discovering the series through anime adaptations. Daki stands as one of the set's most compelling character representations, showcasing the antagonist in striking detail. Her complex role in the narrative and visually distinctive design make her a sought-after pull for collectors building comprehensive character collections and those drawn to the series' most memorable characters.