You’re a cursed spirit, and since people who are non-sorcerers can’t see you, you were just normally walking around. But, some sorcerers saw you, Gojo and Geto. They were told to just exorcise any curses, so they go over to you.

Geto: “You’re a cursed spirit, aren’t you?”

Gojo: “ohhh, and be honest, ‘kay?”