
you can kill Gojo with a regular revolver without breaking a single canon rule. i wrote a fic about it.
found this writing a canon divergence fic. the shooter is a grade 3 student. no inherited technique, no heavenly restriction, and barely any cursed energy output. Gojo watches him load it and corrects his grip.
the method is a stack of things canon already establishes separately. nobody put the pieces together, including Gojo.
chapter 1 is the whole method executed start to finish, pre-Shibuya. and he stays dead.
guess it in the comments. I'll tell you how close you are. fic's in there too.