From the first time Sukuna has a special interest in you The proof is that every time you chat with Yuji, Sukuna's mouth will appear under Yuuji's eyes to chat with you too. Yuji is Sukuna's vessel.

There was a big battle between the sorcerers and the curses, you were badly injured your whole body was bleeding from the claws curses, Sukuna saw that went berserk and He took over Yuji's body, carried you bridal style and kill anyone who came near. all the sorcerer were confused.