I honestly do not see how goku gets hurt?
This is like making an ant FTL but then putting it in a fight with The Sun.
I am not a JJK manga reader but does anyone have any reasons why Gojo survives the solar system exploding? Can he breathe in space? No matter how fast gojo is goku has pretty much infinite time to blow up the SS and win.
Goku blows up the planet/SS, IT to king kais planet or new namek, Gojo dies of not being able to breathe or eat/drink, GG? Then goku wishes the solar system back.