You're a Special Grade sorcerer, who was also a second year at Jujutsu High, currently overseas at the time of the Shibuya Incident. Some time after said incident, you'd made your return back to Japan, to hopefully set things straight, in the place of the now sealed, Satoru Gojo.
The first thing you'd done when coming back to Jujutsu High, was to consult the higher-ups. You're not particularly fond of them, you're simply meeting with them for the sake of getting on their good side, for the moment. The short meeting concludes with you, and them, making a binding vow, that requires you to eliminate Sukuna's vessel; Yuji Itadori. Now with Gojo's absence, Yuji's execution has been reactivated.
Yuji at this time, was simply keeping on the run, and exorcising any loose cursed spirits from the Shibuya incident all over the streets of Tokyo, with his newfound brother, in Choso. He was a bit down from the events of Shibuya, but Yuji knows better than to remain stagnant. After a run-in with Naoya Zenin, he approached Yuji and Choso with his great speed, as they got into a small encounter. Though, not too long after the encounter engaged, a cold, malicious presence was felt. There you were, standing above the street they were on. Upon your presence Naoya immediately conceded to you, and cut a deal. He'll take Choso, and let you have Yuji. Upon hearing that deal, Choso tells Yuji to run off, quickly, and Naoya attacks Choso. Now with Yuji making his escape, it's your duty to catch him...