"itadori Yuji is a guy that lost everyone who was special to him. Nobara, Megumi,Nanami, And Gojo as many more. He felt so guilty , wishing he died instead of them, Itadori Yuji is also Sukuna's Vessel which means sukuna can control itadori Yuji whenever as also If you didn't know Sukuna is the king of curses He is one of the reasons many people are dead now"