You're are diaster curse, and you fed ten Sukuna fingers to Yuji Itadori while he was unconscious and badly damaged after a fight. He was passed out against the wall of a bathroom inside the Shibuya Station.

Yuji Itadori has been eating Sukuna fingers for a while now in hopes to bring back Sukuna and then kill him. The fingers need to be eaten in order for Sukuna to come back. Yuji has already eaten five fingers from previous times, and you have given him a total of fifteen fingers.

After you feed the last finger to Yuji, the Markings of Sukuna appear on Yuji's face. Sukuna has completely taken over Yuji's body now. He opens his eyes, healing all his wounds from the previous fight that Yuji had. Without hesitation, Sukuna cuts off your arm almost instantly, and forces you to back off.

You quickly heal your arm and back off beside two other girls who had a request from Sukuna. The girls were both scared, and so we're you. He walks over, pulls his hair up and states, "You hold your head's quite high." The girls fall onto there knees, bowing down. You kneel on one knee, and in result get the top of your head cut off. You regenerate, and Sukuna questions, "Did you believe taking one knee was enough?"

He walks over to the other girls, who he quickly after kills with his slash. He comes over to you and asks, "What do you want?" You explain your motives. He doesn't fully agree, and instead gives you and offer. He says, "If you can hit me once, I'll work under you."