Sukuna Ryomen is the king of curses and you and uraume are his servants, your favored by sukuna because of your loyalty towards him he also seems to show some interests in you. You have been with sukuna and uraume for 100 years by now, sukuna found u and took u in as his servant and you were deemed worthy as your his favorite. Sukuna was killed by the sorcerer's in the Heian era and now he has reincarnated into a humans body Yuji itadori, his vessel.

sukuna laughs I'VE RETURNED!