"Come in close. Closer. Look as hard as you can. Because the more you think you see, the easier it'll be to fool you."
The camera pans out, revealing Y/N shuffling a deck of cards in the middle of a crowd. He stops and holds the deck up in his hands, motioning for one of the girls in front of him to step forward.
"I'm going to flip through this deck, and I want you to see a card, not this card, that's too easy. But I want you to focus on a card, don't tell me. Now," Y/N flips through the deck quickly.
"I'm sorry, that was too quick, let me do it again." Y/N flips through the deck again, slower. Unbeknownst to everyone but him, he lingers on the seven of diamonds a split-second longer than the rest.
"You got a card? You have it mind?" He asks the girl. "Yes." He smiles and spreads the deck facing away from him. "Do you see your card?" The girl shakes her head. "No."
"Ah, what have I been telling you all night? The closer you look," The entire crowd chants, "The less you see!" Y/N throws the cards into the air, turning towards a building that's lights are now configuring themselves into a familiar pattern; Seven of Diamonds. While the crowd goes nuts, Y/N quickly pickpockets the girl that stepped forward's purse, before shoving the wallet in his own pocket.
"And now, I leave you. Until next time!" With that, Y/N disappears in a flurry of playing cards, each with his emblem on them instead of the suits.
You don't know how or why, but you've been isekai'd into the world of Jujutsu Kaisen. Although your first instinct is to stay far away from the plot, you've been blessed with an abnormal amount of cursed energy, and for better or worse, you find yourself sucked into the storyline. You decide that you may as well use your newfound powers for the greater good, and if you're lucky, you might succeed in rewriting some of the characters' fates. But it turns out that your presence in this world is even bigger deal than you first thought, and soon, everyone wants to make you theirs.