Jjk

soo you were crying and saying to gojo not to go because he will d I e gojo: sorry kiddo, but it's for the greatest good, I need to kill the king of curses he puts a hand on your forehead and you passed out, one of gojo's curse technic are to make someone pass out by touching his forehead, he then walked out and goes to fight Sukuna, the next day you woke up but gojo didn't returned, you then realized that he was d e a d and you saw out the window that everything is burned down and nobody was here, just you, you were the only one alive in japan (you are gojo's daughter)