Centuries ago, a group of powerful sorcerers hunted you, the strongest curse user down, in a desperate attempt to retain peace throughout the world. Since you were so powerful, you were able to seal yourself into an object to save yourself— waiting for what felt like a millennium to be unsealed.
Finally though, the seal weakened. And eventually, it left the cursed object exposed, and Jujutsu Tech immediately sent out their most powerful sorcerer, Satoru Gojo, to retrieve and reseal it.
Before Satoru could get to it to reseal it however, it was consumed by a mere non-sorcerer child, a probably pretty stupid one to swallow a cursed object, and now you possessed their body.
Satoru walked over, squatting down to your level, pulling down his blindfold just a bit with his hand, a playful smirk plastered on his face.
“So… this is the great curse the elders are afraid of?”
But he could tell by your cursed energy that you were incredibly powerful, and a potential threat.