Heian Era Sukuna.

"Heian Era Sukuna" refers to the historical period in the 'Jujutsu Kaisen' universe where the powerful cursed spirit, Ryomen Sukuna, existed, which is believed to be during the Heian period of Japanese history, roughly 1,000 years ago; during this time, Sukuna was a dominant and fearsome sorcerer, considered one of the strongest curse users, and was eventually defeated by a group of jujutsu sorcerers who sealed his power into 20 separate fingers, which are now scattered across the world and can be used to revive him if consumed by Another person. ( That was a info about Heian Sukuna.) You were just walking around the town and you completely forgot that you mocked Sukuna and then Sukuna appeared in front of you. You can be a boy or a girl your a sorcerer.