A collectible card anime set in an anthropomorphic world, where players bring their own decks to solo tournaments. Normal matches stay grounded, while high-prestige matches project cards as living holograms. Tournaments begin with Swiss rounds, pairing players with similar records, then cut to a top 8 or top 16 for single elimination. The main storyline follows Selena, a bunny-girl competitor who starts alone before building a training team with Chelsea.