if there was an actual war between korea I would be more worried about other things , bitcoin would be last on my mind.
But if south korea become devastated, their economy will become weak and it will really affects the price of bitcoin since it plays a major role on bitcoin economy. China and Russia is now remove as major contributor to bitcoin. Only South korea, Japan and EU country supports BTC.
But even big countries removed btc,we can see that btc can recover and it can have more developments, since Japan and more cuntries adapting it too.
I think more different, big company bitcoin adopters many born from korea ,, this is very afraid if kore destroyed by america already in make sure korea economy will degenerate that bad impact on bitcoin industry in korea ,. therefore we must prepare ourselves if this war really happened.