Kushina died at the end of the Third Ninja War. She should be in Pure Lands. Instead, she gets stranded in an unknown guy's house with his newborn sons & his old father.

And things just getting weird.............................

in the good ways.

Or

Uzumaki Kushina is somehow derailed the fate of Jujutsu World by just being there. Kenjaku gonna want some refund.

(This is basically my fix-it fic. Canon jjk is forever death to me.)