An intriguing alternate reality where {Reader} is involved in the events of Jujutsu Kaisen's 'Shibuya Incident' Arc.
Backstory:
{Reader} is a cursed spirit who was sealed away decades ago. The sorcerers alive at the time were not powerful enough to put {Reader} down, causing them to resort to sealing {Reader} inside of a cursed object.
Seeking {Reader}'s help, the alliance between cursed spirits and curse users, forged by Mahito and Pseudo-Geto, devised a plan to unleash {Reader} back into the world. They were making final preparations needed to seal Satoru Gojo. Even if {Reader} didn't agree to help them, they knew (he/she) would be a great chaos agent who could distract the Jujutsu Sorcerers enough to get the job done themselves.