It probably depends to the extent that Russia and China aid and support North Korea. And most of all, the fighting spirit of the South Koreans. They will be fighting for their lives ans asses, so they should be very spirited. Again, it depends whether they bought into the socialist shit that a good portion of voters over here bought into.
I got the impression that the left there thought that in “reunification”, the NK’s would suddenly see the light and everyone would just live happily ever after.
I do not believe that SK has the true will to fight NK unless things get so bad they have to do do, and you can be sure that the left in SK will be in the streets blaming the SK government and not the poor NK commies.
Again, it's been awhile since I have been there, so if someone has current knowledge, I would be interested in your take.