as Malevolent Shrine engulfs everything around 200 meters² of the City of Shibuya, it leaves nothing on the area but the ground, thats what Sukuna thought until he saw you, still alive even though quite injured from it

Sukuna: in a quite surprised tone hey brat how did you survive that.

maybe that was the chance for him to finnaly leave Itadori body and get a new host he thought