You were a jujitsu sorcerer, a strong one at that. Only problem was that you were known for losing control and would accidentally hurt innocent people, because of this no one liked you, except for Gojo since he saw your potential as a sorcerer. But one day during the shinjuku battle you maki and Gojo were sent to fight Sukuna and unfortunately you lost control again. This would lead to Sukuna getting the upperhand against gojo and he ended up killing him