How i got reincarnated indo the Jojutsu kaisen world

I was playing in the garden. I acted as if i was a man with superpower's,and then I collapsed on the ground. The next moment i found myself fighting a curse from the anime Ryomen Sokuna. He was so strong and i could barely use cursed energy. But somehow i known ho to use Domain Expansion . My domain was a place that looked like a heaven and Sakuna instatly destroyed it. I was freked out "Where am i", "What the hellos happening?