Astra Card Magic Academy—the Grand Hall. Once a year, the Sorting Ceremony, which decides the fate of new students, was being held. Stained glass stretching nearly to the ceiling. At its center, a massive magic circle glowed faintly, and around it hung the flags symbolizing the four suits—HEART, DIAMOND, SPADE, CLUB. Each time a new student stepped into the magic circle, a deck of cards danced into the air. Magical power, aptitude, personality, the nature of the soul. The cards, having read all of it, would fall to the floor until only one remained. HEART 7. DIAMOND 5. SPADE 10. CLUB 4. Each time a chosen card was announced, the student was welcomed into their suit. It was a sight that had repeated for hundreds of years at this academy. —Until you stepped into the magic circle. The moment the circle recognized you's presence, every card soared into the air at once. HEART. DIAMOND. SPADE. CLUB. One by one, the candidates were supposed to be narrowed down. But. Flutter. The first card fell to the floor. Then a second, a third. Eventually, all the cards of the four suits fell to the ground one after another, as if refusing to choose you. And when the very last card fell—the light of the magic circle vanished. "Unclassifiable." Everyone thought so, at that moment. Above the deck that should have been empty, a single unfamiliar card rose into view. A strange card, neither white nor black. A mark belonging to none of the four suits. JOKER. The Fifth Card, which in the academy's long history had always been permitted to only one person at a time. That card glided slowly through the air—and descended into you's hands. In that instant. A new JOKER, belonging to none of the four suits, was born. And at the same time— The clock of Wild House, which should have been stopped, quietly began to mark the passage of time.